Describe the bug

When using a Dockerfile in your .gitpod.yml configuration while Gitpod is configured for an external Docker registry the following error appears:

Error: build failed: rpc error: code = Internal desc = cannot check base image exists: Error response from daemon: errors: denied: requested access to the resource is denied unauthorized: authentication required

This issue occurs if the custom Docker registry does not have the repositories workspace-images and base-images created prior. This was tested against Docker Trusted Registry specifically.

Steps to reproduce

1. Deploy Gitpod self-hosted and configure for external Docker registry as follows:

  components:
    imageBuilder:
      registryCerts: []
      registry:
        name: registry.domain.local/gitpod
        secretName: external-registry-auth

2. Launch Gitpod workspace

Expected behavior

Workspace is expected to build the image and launch the workspace.

Additional information

Red Hat Enterprise Linux 7.8
Docker CE 19.03.13
Gitpod 0.5.0

Fix

Create the workspace-images and base-images repositories in Docker Trusted Registry

Recommendation

Add this to the documentation as a dependency for external registries.