docker logout Command Reference

Remove stored credentials for a registry.

docker logout deletes the saved authentication for a registry from the Docker config. It is the cleanup counterpart to docker login, useful at the end of a job to ensure credentials do not linger.

Usage

docker logout [SERVER] - remove credentials for SERVER (defaults to Docker Hub)
No flags; the only argument is the optional registry host

Example

shell

docker logout ghcr.io
docker logout

In CI

On ephemeral runners the whole environment is discarded after the job, so logout is rarely strictly necessary. On persistent or shared runners, log out at the end of the job (for example in an always() cleanup step) so the next job cannot reuse your registry credentials.

Key takeaways

logout removes stored auth for one registry, mirroring login.
On shared or persistent runners, log out to prevent credential reuse.
On disposable runners the environment is torn down, so logout is optional.

Related guides

docker login Command ReferenceReference for docker login in CI: authenticate to a registry with -u and --password-stdin to avoid leaking cr… docker context Command ReferenceReference for docker context in CI: create, list, and switch Docker endpoints to target a remote daemon over… docker push Command ReferenceReference for docker push in CI: publish a tagged image or all tags to a registry, with notes on authenticati…