Example workflow used in this article: https://medium.com/@merlin.pav/122c653c0b09?source=friends_link&sk=4ca7d4ab89ce41f2118a1d9aad50807d

github_article_sample_cd_workflow__ pubdocker.yaml

    - name: Publish Docker Image
      uses: elgohr/[email protected]
      env:
        SSH_PRIVATE_KEY: ${{ secrets.SSH_PRIVATE_KEY }}
      with:
        name: ${{ env.DOCKER_IMAGE }}
        username: ${{ steps.gcloud.outputs.username }}
        password: ${{ steps.gcloud.outputs.password }}
        registry: ${{ env.DOCKER_REGISTRY }}
        tag_names: true
        buildargs: SSH_PRIVATE_KEY