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:
- connecting to a remote daemon, such as a docker-machine provisioned docker engine.
user is added to the docker group. This will impact the security of your system; the docker group is root equivalent. See
<https://docs.docker.com/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.
Note: When running sudo docker login credentials are saved in /root/.docker/config.json.
Print usage statement
Login to a registry on your localhost
# 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 <[email protected]> April 2015, updated by Mary Anthony for v2 <[email protected]> November 2015, updated by Sally O'Malley <[email protected]>