On Linux, container builds authenticate to private registries with your Docker or Apptainer login.
Released on September 24, 2026
- On Linux, pull base images from a private registry by logging in with
docker loginorapptainer registry loginbefore you build; peppy hands your credentials to Apptainer. - Builds that used Docker's browser login no longer fail at random with "incorrect username or password", because peppy leaves Docker's session tokens out of the credentials it gives Apptainer.
- Log in or out while the daemon runs and the change applies to your next build, with no daemon restart.