Tag:
https://docs.docker.com/engine/reference/commandline/tag/#parent-command
...
root@docker-lab:~# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
jlk0013/demo-example latest c30178c5239f 4 days ago 1.11MB
busybox latest c30178c5239f 4 days ago 1.11MB
Push ( + login )
https://docs.docker.com/engine/reference/commandline/login/
...
https://docs.docker.com/engine/reference/commandline/push/
Pull
root@docker-lab:~# docker push jlk0013/demo-example:v1
The push refers to a repository [docker.io/jlk0013/demo-example]
3a1dff9afffd: Pushed
v1: digest: sha256:be3c11fdba7cfe299214e46edc642e09514dbb9bbefcd0d3836c05a1e0cd0642 size: 527
root@docker-lab:~#
...