docker-login man page

docker login [--help] [-p|--password[=PASSWORD]] [-u|--username[=USERNAME]] [SERVER]

Log in to a Docker Registry located on the specified SERVER.  You can specify a URL or a hostname for the SERVER value. If you do not specify a SERVER, the command uses Docker's public registry located at https://registry-1.docker.io/ by default.  To get a username/password for Docker's public registry, create an account on Docker Hub.

docker login requires user to use sudo or be root, except when:

 1.

connecting to  a remote daemon, such as a docker-machine provisioned docker engine.

 2.

user is added to the docker group.  This will impact the security of your system; the docker group is root equivalent.  See Docker Daemon Attack Surface ⟨https://docs.docker.com/engine/articles/security/#docker-daemon-attack-surface⟩ for details.

You can log into any public or private repository for which you have credentials.  When you log in, the command stores encoded credentials in $HOME/.docker/config.json on Linux or %USERPROFILE%/.docker/config.json on Windows.

--help

Print usage statement

-p, --password=""

Password

-u, --username=""

Username

# docker login localhost:8080

docker-logout(1) to log out from a Docker registry.

April 2014, Originally compiled by William Henry (whenry at redhat dot com) based on docker.com source material and internal work. June 2014, updated by Sven Dowideit  ⟨SvenDowideit@home.org.au⟩ April 2015, updated by Mary Anthony for v2  ⟨mary@docker.com⟩ November 2015, updated by Sally O'Malley  ⟨somalley@redhat.com⟩

docker(1), docker-logout(1), docker-pull(1), docker-push(1).