github.com/nf/docker@v1.8.1/docs/reference/commandline/tag.md (about)

     1  <!--[metadata]>
     2  +++
     3  title = "tag"
     4  description = "The tag command description and usage"
     5  keywords = ["tag, name, image"]
     6  [menu.main]
     7  parent = "smn_cli"
     8  weight=1
     9  +++
    10  <![end-metadata]-->
    11  
    12  # tag
    13  
    14      Usage: docker tag [OPTIONS] IMAGE[:TAG] [REGISTRYHOST/][USERNAME/]NAME[:TAG]
    15  
    16      Tag an image into a repository
    17  
    18        -f, --force=false    Force
    19  
    20  You can group your images together using names and tags, and then upload them
    21  to [*Share Images via Repositories*](/userguide/dockerrepos/#contributing-to-docker-hub).