Failing to push image to ghcr.io: 403 (Forbidden)

[J3RN]

Luckily I managed to figure out this issue, but I wanted to write about it so that other could find it.

Issue

In the step using this action, I would receive the following error from Podman:

Error: trying to reuse blob sha256:b2d5eeeaba3a22b9b8aa97261957974a6bd65274ebd43e1d81d0a7b8b752b116 at destination: failed to read from destination repository my_org/my_image: 403 (Forbidden)

Solution

This was a pre-existing package that I'm simply trying to automate the workflow around. The solution lied in permissions on the package. Namely, I needed to:

1. Navigate to the package
2. Click "Package settings" on the right side
   
3. Add the repository running the GitHub Action in the "Manage Actions access" section
   

Voila! It works now.

[tetchel]

Thanks, I added this to the troubleshooting.

[bollian]

As someone who is trying to publish a container for the first time and thus doesn't have access to the packages button in the sidebar, what am I supposed to do?

[tetchel]

I think in the past, I pushed my first version of an image from the command line myself, rather than having Actions do it.

There is probably a better way, though.