How to export docker images

There are two ways to export Docker image: save the image to a TAR file or push it to the registry. Exported images can be used by loading into the local Docker daemon or pulling from the registry.

Docker image export

How to export a Docker image?

Exporting a Docker image can save it to a local or remote registry for use on other machines. There are two common methods:

Method 1: Export to TAR file

 <code class="Bash">docker save [IMAGE_NAME] > [EXPORT_FILE].tar</code>

For example: Export a mirror named "my-image" to a TAR file named "my-image.tar":

 <code class="Bash">docker save my-image > my-image.tar</code>

Method 2: Export to the registry

 <code class="Bash">docker push [IMAGE_NAME] [REGISTRY_URL]/[REPOSITORY_NAME]</code>

For example: Push an image named "my-image" to the "my-repository" repository in the registry named "my-registry":

 <code class="Bash">docker push my-image my-registry.io/my-repository</code>

How to use the exported image?

The exported image can be used in the following ways:

• Loading to the local Docker daemon:

   <code class="Bash">docker load </code>

• Pull from the registry:

   <code class="Bash">docker pull [REGISTRY_URL]/[REPOSITORY_NAME]</code>

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