GitHub Action to install a python package from a private GCP repostiroty (artifact registry)

action.yml

name: Setup private pypi - GCP Artifact Registry

inputs:
  central_project:
    type: string
    required: true
    description: GCP project where the Artifact Registry is located
  central_repo:
    type: string
    required: true
    description: Repository name in the Artifact Registry
  central_repo_location:
    type: string
    required: true
    description: Repository location in the Artifact Registry

runs:
  using: composite
  steps:
    - name: Configure pip access to GCP Artifact Registry
      env:
        central_project: ${{ inputs.central_project }}
        central_repo: ${{ inputs.central_repo }}
        central_repo_location: ${{ inputs.central_repo_location }}
      shell: bash
      run: |
        set -eux
        pip install -q -U keyring keyrings.google-artifactregistry-auth
        keyring --list-backends
        gcloud auth list
        PYPIRC_PATH=$HOME/.pypirc
        gcloud artifacts print-settings python \
          --project=${central_project} --repository=${central_repo} --location=${central_repo_location} \
          --json-key=${{ steps.auth.outputs.credentials_file_path }} > $PYPIRC_PATH
        PIP_CONF_PATH="$HOME/.config/pip/pip.conf"
        mkdir -p $(dirname $PIP_CONF_PATH)
        cat <<END > $PIP_CONF_PATH
        [global]
        extra-index-url = https://${central_repo_location}-python.pkg.dev/${central_project}/${central_repo}/simple/
        END