Example of exporting and importing Docker containers

This article mainly explains the import and export of Docker containers, which can be used as a backup for container snapshots.

Exporting Docker containers

1. First use the command to view the created Docker container

 docker ps -a 

At this time, you can see container id , which is the container ID. We can export the corresponding container based on the container ID.

2. Export a container

Exporting a container is very simple. Use the docker export command. The syntax is: docker export $container_id > 容器快照名

3. View the exported container

 ls 

4. Download the container

View the current path

 pwd 

Knowing that the container path is under tmp, we can directly use the FTP remote tool to connect to the host to download:

Wait for the container file to download

Importing Docker containers

Import a container – docker import command

Now that we have a container snapshot, we can import it whenever we want. Import snapshots using the docker import command.

1. First go to the directory where the container file is located

As mentioned above, the directory exported by the container is under tmp, so let's go directly to the tmp directory

 cd /tmp 

2. Import container

 docker import halo.tar halo:latest

OPTIONS description:

-halo.tar : select the container file name to import
-halo:latest : Specify container name and version

The import and export process is similar, so I won’t show you the pictures here.

3. You can delete the container file after you are done

 rm -rf /tmp/halo.tar

This is the end of this article about exporting and importing Docker containers. For more information about exporting and importing Docker containers, please search for previous articles on 123WORDPRESS.COM or continue to browse the following related articles. I hope you will support 123WORDPRESS.COM in the future!