How to copy Docker images from one host to another without using a repository

docker

• Backup docker image to tar a tar file

  docker save -o <path to image tar file> <image name>
  

• Copy to another machine
• Load image from tar file

  docker load -i <path to image tar file>
  

If all machines in the same network, we can use one line commands to do it.

docker save <image> | bzip2 | \
     ssh user@host 'bunzip2 | docker load'

if pv command is available, you can also use it to view the transfer status.

docker save <image> | bzip2 | pv | \
     ssh user@host 'bunzip2 | docker load'

Reference:
https://stackoverflow.com/questions/23935141/how-to-copy-docker-images-from-one-host-to-another-without-using-a-repository

Written on January 15, 2019