dockergithubcodespacesghcrgithub-container-registry

Preconfigure Container Registry in Codespaces

I'm trying to preconfigure a private container registry in a CodeSpace so workshop participants can use it. According to the docs it's all pretty straight forward, but it looks like I'm missing something, because it won't work, and the docs aren't clear on what I need to expect on the receiving end.

What I've done so far:

enter image description here

If I read the docs correctly, this should make sure docker can pull from ghcr using my credentials, but all I get is an error:

codespace ➜ /workspaces/attendee-jessehouwing (main) $ docker pull ghcr.io/xxxxx-customers/xxxxx-cli
Using default tag: latest
Error response from daemon: Head "https://ghcr.io/v2/xxxxx-customers/xxxxx-cli/manifests/latest": unauthorized

I searched the vscode-container repository for a hint to something I may have to configure on my custom container, but I don't really see anything wrong.

Custom container dockerfile:

FROM mcr.microsoft.com/vscode/devcontainers/universal:1-linux

USER codespace
    
RUN az extension add --name azure-devops

I tried in the standard vscode container and see the same behavior. I must be doing something wrong.

The secrets are registered in the same repository as a set of repository secrets and I'm launching the codespace from the same repo:

Launching codespace from repo

Secrets stored in the same repository's settings

Solution

  • Of course it's very simple once you see it!

    When you open the Secrets in your GitHub settings you end up on the ACTIONS Secrets page. And the fact that there are 3 other secrets pages is hidden because the expanded settings menu has scrolled off screen.

    So make sure you add these secrets to the CODESPACES Secrets page:

    Use the Codespaces secrets page

    Then rebuild the Codespace.