github.com/justincormack/cli@v0.0.0-20201215022714-831ebeae9675/man/src/login.md (about) 1 Log in to a Docker Registry located on the specified 2 `SERVER`. You can specify a URL or a `hostname` for the `SERVER` value. If you 3 do not specify a `SERVER`, the command uses Docker's public registry located at 4 `https://registry-1.docker.io/` by default. To get a username/password for Docker's public registry, create an account on Docker Hub. 5 6 `docker login` requires user to use `sudo` or be `root`, except when: 7 8 1. connecting to a remote daemon, such as a `docker-machine` provisioned `docker engine`. 9 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/security/#docker-daemon-attack-surface) for details. 10 11 You can log into any public or private repository for which you have 12 credentials. When you log in, the command stores encoded credentials in 13 `$HOME/.docker/config.json` on Linux or `%USERPROFILE%/.docker/config.json` on Windows. 14 15 # EXAMPLES 16 17 ## Login to a registry on your localhost 18 19 # docker login localhost:8080 20 21 # See also 22 **docker-logout(1)** to log out from a Docker registry.