github action Error: buildx failed with: ERROR: denied: permission_denied: write_package

Encounter this error while trying to get my dockerfile build going. 

To fix this ensure, you have configure write permission like this:-

name: python-client-prometheus

on:

  push:

    branches: [ "main" ]

  pull_request:

    branches: [ "main" ]

permissions:

  packages: write

 

And then, also ensure you are using and pushing to the right (current) repository. In my case, my current build  repository is called prometheus-monitoring-hello

    - name: Build and Push Docker image

      uses: docker/build-push-action@v5

      with:

        context: .

        push: true

        tags: ghcr.io/${{ github.repository_owner }}/prometheus-monitoring-hello:latest

That's it.