Commandes Linux : docker image tag

DOCKER IMAGE TAG

Usage:	docker image tag SOURCE_IMAGE[:TAG] TARGET_IMAGE[:TAG]

Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE

Créer une image taguée référençant une image existante :

docker image tag source[:tag] destination[:tag]

Equivaut à :
docker tag source[:tag] destination[:tag]
ex :

$ docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
ubuntu              latest              113a43faa138        3 weeks ago         81.2MB
$ docker tag ubuntu:latest darwinos/repotest:ubuntu-18.04
$ docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
darwinos/repotest   ubuntu-18.04        113a43faa138        3 weeks ago         81.2MB
ubuntu              latest              113a43faa138        3 weeks ago         81.2MB

$ docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
                            6d3b578baf20        23 seconds ago      1.16MB
busybox             latest              e1ddd7948a1c        3 weeks ago         1.16MB
$ docker image tag 6d3b578baf20 busybox:custom_V1
$ docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
busybox             custom_V1           6d3b578baf20        57 seconds ago      1.16MB
busybox             latest              e1ddd7948a1c        3 weeks ago         1.16MB