docker save

docker save saves one or more images to a tar archive which is streamed to STDOUT by default.

Use cases

• Reuse docker image in various stages of pipeline

$ docker save hello-world cowardly refusing to save to a terminal. Use the -o flag or redirect $ docker save hello-world > helloworlddocker.tar $ ls -sh helloworlddocker.tar 48 helloworlddocker.tar $ docker save hello-world | gzip > helloworlddocker.tar.gz $ ls -sh helloworlddocker.tar.gz 8 helloworlddocker.tar.gz

After saving it as a backup, we can re-use it using docker load.

$ docker load < helloworld.tar.gz