How do i save a docker image?

petulia3478

Also see: How do i load a previously save docker image?

Which image do you want to save? Let's save the alpine image.

$ docker images
REPOSITORY                 TAG                 IMAGE ID            CREATED             SIZE
docker                     latest              21df41782cc5        2 weeks ago         166MB
alpine                     latest              3f53bb00af94        2 weeks ago         4.41MB

Save the alpine docker image.

$ docker save alpine > /tmp/alpine.tar

Do an normal tar listing to see what's in the archive.

$ tar tvf /tmp/alpine.tar 
-rw-r--r-- 0/0            1511 2018-12-21 00:21 3f53bb00af943dfdf815650be70c0fa7b426e56a66f5e3362b47a129d57d5991.json
drwxr-xr-x 0/0               0 2018-12-21 00:21 a21b1050952cdc06771df49f52bd43b9adff41216b0ea39dbef0157cae64904b/
-rw-r--r-- 0/0               3 2018-12-21 00:21 a21b1050952cdc06771df49f52bd43b9adff41216b0ea39dbef0157cae64904b/VERSION
-rw-r--r-- 0/0            1184 2018-12-21 00:21 a21b1050952cdc06771df49f52bd43b9adff41216b0ea39dbef0157cae64904b/json
-rw-r--r-- 0/0         4672000 2018-12-21 00:21 a21b1050952cdc06771df49f52bd43b9adff41216b0ea39dbef0157cae64904b/layer.tar
-rw-r--r-- 0/0             202 1970-01-01 01:00 manifest.json
-rw-r--r-- 0/0              89 1970-01-01 01:00 repositories