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

     1  <!--[metadata]>
     2  +++
     3  title = "logout"
     4  description = "The logout command description and usage"
     5  keywords = ["logout, docker, registry"]
     6  [menu.main]
     7  parent = "smn_cli"
     8  weight=1
     9  +++
    10  <![end-metadata]-->
    11  
    12  # logout
    13  
    14      Usage: docker logout [SERVER]
    15  
    16      Log out from a Docker registry, if no server is
    17  	specified "https://index.docker.io/v1/" is the default.
    18  
    19  For example:
    20  
    21      $ docker logout localhost:8080
    22  
    23  
    24