{"id":1247,"date":"2024-07-23T12:16:15","date_gmt":"2024-07-23T12:16:15","guid":{"rendered":"https:\/\/dockerpros.com\/?post_type=glossary&#038;p=1247"},"modified":"2024-07-23T12:21:40","modified_gmt":"2024-07-23T12:21:40","slug":"docker-build-export","status":"publish","type":"glossary","link":"https:\/\/dockerpros.com\/it\/wiki\/docker-build-export\/","title":{"rendered":"Esportazione della build Docker"},"content":{"rendered":"<h1>Guida avanzata all'esportazione della build Docker\n\nDocker \u00e8 una piattaforma open source che consente agli sviluppatori di creare, distribuire e eseguire applicazioni in contenitori. I contenitori sono pacchetti leggeri e autonomi che includono tutto il necessario per eseguire un'applicazione, inclusi il codice, il runtime, le librerie di sistema e le impostazioni. Docker semplifica il processo di creazione e gestione dei contenitori, rendendolo pi\u00f9 veloce e affidabile.\n\nUna delle funzionalit\u00e0 chiave di Docker \u00e8 la possibilit\u00e0 di creare immagini personalizzate per i contenitori. Un'immagine Docker \u00e8 un modello di sola lettura che contiene le istruzioni per creare un contenitore. Puoi creare la tua immagine personalizzata partendo da un'immagine di base, come Ubuntu o Alpine, e aggiungendo il tuo codice e le tue dipendenze.\n\nUna volta creata la tua immagine personalizzata, puoi esportarla in un file tar per distribuirla o archiviarla. L'esportazione di un'immagine Docker \u00e8 un processo semplice che pu\u00f2 essere eseguito utilizzando il comando docker save. Questo comando crea un file tar che contiene l'immagine e tutti i suoi livelli.\n\nPer esportare un'immagine Docker, apri un terminale e digita il seguente comando:\n\n```\ndocker save -o .tar \n```\n\nSostituisci `` con il nome che desideri dare al file tar e `` con il nome dell'immagine Docker che desideri esportare.\n\nAd esempio, se desideri esportare un'immagine chiamata \"mia_app\" in un file chiamato \"mia_app.tar\", digita il seguente comando:\n\n```\ndocker save -o mia_app.tar mia_app\n```\n\nDocker creer\u00e0 un file tar chiamato \"mia_app.tar\" che contiene l'immagine \"mia_app\" e tutti i suoi livelli.\n\nPuoi anche esportare pi\u00f9 immagini Docker in un unico file tar. Per fare ci\u00f2, elenca i nomi delle immagini separate da uno spazio dopo il comando docker save. Ad esempio:\n\n```\ndocker save -o mie_app.tar mia_app1 mia_app2 mia_app3\n```\n\nQuesto comando creer\u00e0 un file tar chiamato \"mie_app.tar\" che contiene le immagini \"mia_app1\", \"mia_app2\" e \"mia_app3\".\n\nUna volta esportata l'immagine Docker in un file tar, puoi distribuirla o archiviarla come desideri. Puoi caricare il file tar su un registro Docker privato o pubblico, come Docker Hub, per renderlo disponibile ad altri utenti. Puoi anche archiviare il file tar localmente per un uso futuro.\n\nPer importare un'immagine Docker da un file tar, puoi utilizzare il comando docker load. Questo comando legge il file tar e ricrea l'immagine Docker al suo interno. Per importare un'immagine Docker, digita il seguente comando:\n\n```\ndocker load -i .tar\n```\n\nSostituisci `` con il nome del file tar che contiene l'immagine Docker che desideri importare.\n\nAd esempio, se desideri importare un'immagine da un file chiamato \"mia_app.tar\", digita il seguente comando:\n\n```\ndocker load -i mia_app.tar\n```\n\nDocker legger\u00e0 il file tar e ricreer\u00e0 l'immagine \"mia_app\" al suo interno.\n\nL'esportazione e l'importazione di immagini Docker sono operazioni comuni nel flusso di lavoro di sviluppo e distribuzione delle applicazioni. Queste funzionalit\u00e0 ti consentono di creare immagini personalizzate, distribuirle su pi\u00f9 host e archiviarle per un uso futuro. Con Docker, puoi semplificare il processo di creazione e gestione dei contenitori, rendendo lo sviluppo e la distribuzione delle applicazioni pi\u00f9 veloci e affidabili.<\/h1>\n<p>Docker Build Export, un comando che svolge un ruolo fondamentale nell'ecosistema Docker, si riferisce alla capacit\u00e0 di esportare il file system di un'immagine costruita. <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> o <span class=\"glossaryai-tooltip glossary-term-650\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/container\/\" target=\"_blank\">container<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">Containers are lightweight, portable units that encapsulate software and its dependencies, enabling consistent execution across different environments. They leverage OS-level virtualization for efficiency.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/container\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> to a tar archive. This functionality allows developers and system administrators to transfer the contents of a Docker <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> o <span class=\"glossaryai-tooltip glossary-term-650\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/container\/\" target=\"_blank\">container<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">Containers are lightweight, portable units that encapsulate software and its dependencies, enabling consistent execution across different environments. They leverage OS-level virtualization for efficiency.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/container\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> in a portable format. By understanding and leveraging this feature, users can streamline their workflows, share Docker images across different environments, and deploy applications more efficiently.<\/p>\n<h2>Understanding Docker Image and Container Architecture<\/h2>\n<p>Before diving into the specifics of Docker Build Export, it is essential to clarify some fundamental concepts related to Docker images and containers. <\/p>\n<p>A <strong>Docker <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span><\/strong> \u00e8 un pacchetto eseguibile leggero e autonomo che include tutto il necessario per <span class=\"glossaryai-tooltip glossary-term-672\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/run\/\" target=\"_blank\">correre<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">\"RUN\" si riferisce a un comando in diversi linguaggi di programmazione e sistemi operativi per eseguire un programma o script specificato. Avvia processi, fornendo un ambiente controllato per l'esecuzione dei compiti.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/run\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> a piece of software, including the code, runtime, libraries, environment variables, and configuration files. Docker images are created from a series of layers, each representing a set of changes made to the file system. These layers are derived from a base <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> (often an OS or a minimal <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span>) and are built using a <span class=\"glossaryai-tooltip glossary-term-652\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/dockerfile\/\" target=\"_blank\">Dockerfile<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">Un Dockerfile \u00e8 uno script contenente una serie di istruzioni per automatizzare la creazione di immagini Docker. Specifica l'immagine di base, le dipendenze dell'applicazione e la configurazione, facilitando la distribuzione coerente in diversi ambienti.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/dockerfile\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span>, which contains a set of instructions on how to assemble the <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span>.<\/p>\n<p>A <strong><span class=\"glossaryai-tooltip glossary-term-650\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/container\/\" target=\"_blank\">container<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">Containers are lightweight, portable units that encapsulate software and its dependencies, enabling consistent execution across different environments. They leverage OS-level virtualization for efficiency.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/container\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span><\/strong>, on the other hand, is a running instance of a Docker <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span>. Containers are ephemeral; they can be created, started, stopped, deleted, and replicated quickly. Each <span class=\"glossaryai-tooltip glossary-term-650\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/container\/\" target=\"_blank\">container<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">Containers are lightweight, portable units that encapsulate software and its dependencies, enabling consistent execution across different environments. They leverage OS-level virtualization for efficiency.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/container\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> operates in isolation from others, ensuring that various applications can <span class=\"glossaryai-tooltip glossary-term-672\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/run\/\" target=\"_blank\">correre<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">\"RUN\" si riferisce a un comando in diversi linguaggi di programmazione e sistemi operativi per eseguire un programma o script specificato. Avvia processi, fornendo un ambiente controllato per l'esecuzione dei compiti.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/run\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> with different dependencies without conflict.<\/p>\n<h2>La necessit\u00e0 di Docker Build Export<\/h2>\n<p>In the context of application development and deployment, the necessity for Docker Build Export arises from several scenarios:<\/p>\n<ol>\n<li>\n<p><strong>Portabilit\u00e0<\/strong>: Docker images can be moved between environments (e.g., development, testing, and production). Exporting images in tar format simplifies this process by creating a single file that can be transferred easily.<\/p>\n<\/li>\n<li>\n<p><strong>Backup<\/strong>Gli sviluppatori hanno spesso bisogno di salvare un'istantanea delle loro immagini o contenitori. Docker Build Export consente la creazione di un backup senza fare affidamento su <span class=\"glossaryai-tooltip glossary-term-736\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/docker-registry\/\" target=\"_blank\">Docker registry<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">A Docker Registry is a storage and distribution system for Docker images. It allows developers to upload, manage, and share container images, facilitating efficient deployment in diverse environments.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/docker-registry\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span>.<\/p>\n<\/li>\n<li>\n<p><strong>Compliance and Auditing<\/strong>: Some organizations require a record of which images were deployed and their contents. Exporting images provides a tangible artifact that can be archived and reviewed.<\/p>\n<\/li>\n<li>\n<p><strong>Ottimizzazione delle prestazioni<\/strong>: In cases where users work with large images, exporting only the layers that have been modified can help in optimizing the performance of CI\/CD pipelines by minimizing the amount of data transferred.<\/p>\n<\/li>\n<\/ol>\n<h2>Come funziona Docker Build Export<\/h2>\n<p>Il comando Docker Build Export viene utilizzato principalmente con il <code>docker build<\/code> command to output the constructed <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> in a tarball format. This tarball becomes a self-contained artifact of the <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span>, which can then be imported into another Docker host using the <code>docker load<\/code> command.<\/p>\n<p>The basic syntax for exporting a Docker <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> looks like this:<\/p>\n<pre><code class=\"language-bash\">docker build --output  <\/code><\/pre>\n<p>Where:<\/p>\n<ul>\n<li><code>`: This is where the exported file will be saved. It can be a directory for a multi-file export or a specific filename with a<\/code>.tar` extension.<\/li>\n<li>&#8220;: The build context, typically a directory containing the <span class=\"glossaryai-tooltip glossary-term-652\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/dockerfile\/\" target=\"_blank\">Dockerfile<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">Un Dockerfile \u00e8 uno script contenente una serie di istruzioni per automatizzare la creazione di immagini Docker. Specifica l'immagine di base, le dipendenze dell'applicazione e la configurazione, facilitando la distribuzione coerente in diversi ambienti.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/dockerfile\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> and other relevant files needed for the build.<\/li>\n<\/ul>\n<h3>Example of Docker Build Export<\/h3>\n<p>Let&#8217;s consider a practical example. Assume you have a <span class=\"glossaryai-tooltip glossary-term-652\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/dockerfile\/\" target=\"_blank\">Dockerfile<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">Un Dockerfile \u00e8 uno script contenente una serie di istruzioni per automatizzare la creazione di immagini Docker. Specifica l'immagine di base, le dipendenze dell'applicazione e la configurazione, facilitando la distribuzione coerente in diversi ambienti.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/dockerfile\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> that creates a simple web server <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> based on Nginx:<\/p>\n<pre><code class=\"language-Dockerfile\"># Dockerfile\nFROM nginx:alpine\n<span class=\"glossaryai-tooltip glossary-term-673\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/copy\/\" target=\"_blank\">COPIA<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">COPY \u00e8 un comando nella programmazione informatica e nella gestione dei dati che facilita la duplicazione di file o dati da una posizione a un'altra, garantendo l'integrit\u00e0 e l'accessibilit\u00e0 dei dati.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/copy\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> .\/html \/usr\/share\/nginx\/html<\/code><\/pre>\n<p>You can build and export this <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> using the following command:<\/p>\n<pre><code class=\"language-bash\">docker build --output my-nginx-image.tar .<\/code><\/pre>\n<p>This command will create a tarball named <code>my-nginx-image.tar<\/code> nella directory corrente, contenente i file del server Nginx insieme ai tuoi file HTML personalizzati.<\/p>\n<h2>Key Features of Docker Build Export<\/h2>\n<h3>1. Multi-Arch Support<\/h3>\n<p>Docker allows for building images that target multiple architectures (e.g., amd64, arm64). When exporting a multi-architecture <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span>, Docker organizes the output tarball to reflect the structure, making it easier for deployments across different platforms.<\/p>\n<h3>2. Exporting Specific Layers<\/h3>\n<p>One of the intelligent features of Docker Build Export is that it allows you to control which layers are exported. By using specific flags when constructing an <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span>, you can include or exclude certain layers based on your needs. This approach can be handy for debugging purposes or when you want to share only a specific part of an <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span>.<\/p>\n<h3>3. Compressed Output<\/h3>\n<p>Il file tar esportato pu\u00f2 essere compresso per risparmiare spazio. Utilizzando le opzioni di compressione integrate di tar (come gzip), \u00e8 possibile ridurre significativamente le dimensioni del file esportato, facilitandone il trasferimento tramite rete.<\/p>\n<h3>4. Integrazione con le pipeline CI\/CD<\/h3>\n<p>Docker Build Export can be seamlessly integrated into Continuous Integration and Continuous Deployment (CI\/CD) pipelines. By exporting images after successful builds, developers can automate the release process and ensure consistency across environments.<\/p>\n<h2>Common Use Cases for Docker Build Export<\/h2>\n<h3>1. Migrating Environments<\/h3>\n<p>When moving from one server to another or setting up a new environment, Docker Build Export allows you to ensure that the exact <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> used in production can be transferred and deployed without discrepancies.<\/p>\n<h3>2. Offline Deployment<\/h3>\n<p>In scenari in cui <span class=\"glossaryai-tooltip glossary-term-661\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/network\/\" target=\"_blank\">network<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">Una rete, in informatica, indica un insieme di dispositivi interconnessi che comunicano e condividono risorse. Consente lo scambio di dati, favorisce la collaborazione e migliora l'efficienza operativa.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/network\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> connectivity is limited or nonexistent, exporting images can facilitate offline deployments. Developers can export the necessary images to a USB drive and import them on the target machine.<\/p>\n<h3>3. Archiving Legacy Images<\/h3>\n<p>Per i team che mantengono versioni pi\u00f9 vecchie delle applicazioni, esportare e archiviare queste immagini Docker garantisce che possano essere recuperate e distribuite se necessario in futuro.<\/p>\n<h3>4. Lavorare con i Sistemi Legacy<\/h3>\n<p>In some cases, teams may be required to work with legacy systems that do not have direct access to a <span class=\"glossaryai-tooltip glossary-term-736\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/docker-registry\/\" target=\"_blank\">Docker registry<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">A Docker Registry is a storage and distribution system for Docker images. It allows developers to upload, manage, and share container images, facilitating efficient deployment in diverse environments.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/docker-registry\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> o l'accesso a Internet. La creazione e l'esportazione di immagini Docker in locale rende possibile lo sviluppo di applicazioni in tali ambienti.<\/p>\n<h2>Limitations of Docker Build Export<\/h2>\n<p>While Docker Build Export is a powerful tool, it does come with certain limitations:<\/p>\n<ul>\n<li>\n<p><strong>Dimensioni dei file di grandi dimensioni<\/strong>: Le immagini esportate, in particolare quelle con molti livelli o una quantit\u00e0 sostanziale di dati, possono comportare file tar di grandi dimensioni. Ci\u00f2 potrebbe creare sfide in ambienti con limitazioni di archiviazione.<\/p>\n<\/li>\n<li>\n<p><strong>Gestione delle dipendenze<\/strong>: Exporting an <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> does not automatically resolve external dependencies (e.g., databases or other services). Users need to ensure that all necessary services are available in the target environment.<\/p>\n<\/li>\n<li>\n<p><strong>Nessun Cronologia Versioni<\/strong>A differenza dei registri Docker che mantengono le cronologie delle versioni, l'esportazione delle immagini non fornisce il controllo delle versioni. Gli utenti devono gestire il controllo delle versioni separatamente se hanno bisogno di tenere traccia di pi\u00f9 iterazioni delle immagini.<\/p>\n<\/li>\n<\/ul>\n<h2>Best Practices for Using Docker Build Export<\/h2>\n<p>To make the most out of Docker Build Export, consider following these best practices:<\/p>\n<h3>1. Pulisci Prima di Esportare<\/h3>\n<p>Removing unnecessary files and dependencies from your Docker <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> before exporting can help reduce the size of the exported tarball. Use <code>.dockerignore<\/code> files effectively to prevent unwanted files from being copied into the <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span>.<\/p>\n<h3>2. Use Tags Wisely<\/h3>\n<p>Quando si esportano immagini, utilizzare tag significativi per facilitare l'identificazione delle versioni. Questa pratica diventa cruciale quando si dispone di pi\u00f9 artefatti in archiviazione, semplificando la gestione e il recupero di versioni specifiche.<\/p>\n<h3>3. Test Exported Images<\/h3>\n<p>Before relying on an exported <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> for deployments, it&#8217;s advisable to test the import and execution of the <span class=\"glossaryai-tooltip glossary-term-651\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\" target=\"_blank\">immagine<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">An image is a visual representation of an object or scene, typically composed of pixels in digital formats. It can convey information, evoke emotions, and facilitate communication across various media.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> in a staging environment. This testing helps identify any issues before they can affect production.<\/p>\n<h3>4. Document the Export Process<\/h3>\n<p>Maintaining documentation on how to export and import images, along with any specific flags or configurations used, can aid team members and future developers in understanding the process and maintaining consistency.<\/p>\n<h3>5. Automate with Scripts<\/h3>\n<p>L'utilizzo di script di automazione per gestire il processo di esportazione pu\u00f2 semplificare i flussi di lavoro, specialmente negli scenari CI\/CD. Gli script possono automatizzare le convenzioni di denominazione, la compressione e altre attivit\u00e0 ripetitive.<\/p>\n<h2>Conclusione<\/h2>\n<p>Docker Build Export \u00e8 un aspetto fondamentale dell'ecosistema Docker che consente agli sviluppatori di gestire in modo efficace le proprie immagini e contenitori Docker. Comprendendo il suo funzionamento, i casi d'uso e le best practice, gli sviluppatori possono sfruttare questo comando per migliorare i propri flussi di lavoro e garantire una distribuzione delle applicazioni senza interruzioni.<\/p>\n<p>Man mano che il panorama Docker evolve, la capacit\u00e0 di esportare e condividere immagini continuer\u00e0 a svolgere un ruolo cruciale nel modo in cui le organizzazioni costruiscono e distribuiscono le loro applicazioni. Dominare Docker Build Export pu\u00f2 essere un patrimonio inestimabile, fornendo la flessibilit\u00e0 e il controllo necessari nello sviluppo e nelle operazioni software moderne.<\/p>","protected":false},"excerpt":{"rendered":"<p>Docker Build Export \u00e8 una funzionalit\u00e0 che consente agli utenti di esportare l'output della build, inclusi <span class=\"glossaryai-tooltip glossary-term-739\"><span class=\"glossaryai-link\"><a href=\"https:\/\/dockerpros.com\/it\/wiki\/image-layers\/\" target=\"_blank\">livelli<\/a><\/span><span class=\"gai-content-hidden glossaryai-tooltip-content\"><span class=\"gai-tooltip-body\"><span class=\"glossaryai-tooltip-text\">Image layers are fundamental components in graphic design and editing software, allowing for the non-destructive manipulation of elements. Each layer can contain different images, effects, or adjustments, enabling precise control over composition and visual effects.<span class=\"glossaryai-more-link\"> <a href=\"https:\/\/dockerpros.com\/it\/wiki\/image-layers\/\">More \u00bb<\/a><\/span><\/span><\/span><\/span><\/span> e i metadati, in una directory o in un archivio. Ci\u00f2 migliora la portabilit\u00e0 e la riproducibilit\u00e0 delle build in diversi ambienti.<\/p>","protected":false},"author":1,"featured_media":1811,"parent":0,"template":"","glossary-cat":[],"class_list":["post-1247","glossary","type-glossary","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Docker Build Export - Dockerpros<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dockerpros.com\/it\/wiki\/docker-build-export\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Docker Build Export - Dockerpros\" \/>\n<meta property=\"og:description\" content=\"Docker Build Export is a feature that allows users to export the build output, including image layers and metadata, into a directory or archive. 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