[BUG] invalid character 'p' after top-level value: "404 page not found\n"

[L04DB4L4NC3R]

The Bug
Error pushing to docker.pkg.github.com. Pushing to this registry gives the following error:

error parsing HTTP 404 response body: invalid character 'p' after top-level value: "404 page not found\n"

To Reproduce
The following YAML was used in .github/workflows/main.yml

name: Push To Package Registry
on: [push]
jobs:
  publish_docker:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@master
    - name: Publish to Registry
      uses: elgohr/Publish-Docker-Github-Action@master
      with:
        name: ${{ github.GITHUB_REPOSITORY }}project_odin_backend
        username: ${{ secrets.DOCKER_USERNAME }}
        password: ${{ secrets.DOCKER_PASSWORD }}
        tag: $(echo $GITHUB_SHA | head -c7)
        registry: ${{ secrets.DOCKER_REGISTRY_URL }}
        dockerfile: ./ops/images/django.Dockerfile

Output

2019-12-27T12:24:12.9291454Z Successfully built 1046babade11
2019-12-27T12:24:12.9613004Z Successfully tagged ***/project_odin_backend:deployment
2019-12-27T12:24:12.9805217Z The push refers to repository [***/project_odin_backend]
2019-12-27T12:24:13.0121391Z befe63b0f688: Preparing
2019-12-27T12:24:13.0121583Z 3f2736cb5bbb: Preparing
2019-12-27T12:24:13.0121717Z 99347eebf044: Preparing
2019-12-27T12:24:13.0121852Z a12cae9dcc97: Preparing
2019-12-27T12:24:13.0121984Z 44caa05ec880: Preparing
2019-12-27T12:24:13.0122117Z bee6c961bff1: Preparing
2019-12-27T12:24:13.0122246Z 852a1bb5386c: Preparing
2019-12-27T12:24:13.0122375Z 9437609235f0: Preparing
2019-12-27T12:24:13.0122505Z bee1c15bf7e8: Preparing
2019-12-27T12:24:13.0122635Z 423d63eb4a27: Preparing
2019-12-27T12:24:13.0122799Z 7f9bf938b053: Preparing
2019-12-27T12:24:13.0122927Z f2b4f0674ba3: Preparing
2019-12-27T12:24:13.0123056Z 852a1bb5386c: Waiting
2019-12-27T12:24:13.0123189Z 9437609235f0: Waiting
2019-12-27T12:24:13.0123330Z bee1c15bf7e8: Waiting
2019-12-27T12:24:13.0123465Z 423d63eb4a27: Waiting
2019-12-27T12:24:13.0123601Z 7f9bf938b053: Waiting
2019-12-27T12:24:13.0123751Z bee6c961bff1: Waiting
2019-12-27T12:24:13.0123882Z f2b4f0674ba3: Waiting
2019-12-27T12:24:13.0407896Z error parsing HTTP 404 response body: invalid character 'p' after top-level value: "404 page not found\n"
2019-12-27T12:24:13.2949894Z ##[error]Docker run failed with exit code 1
2019-12-27T12:24:13.2969908Z Cleaning up orphan processes

[elgohr]

Are you sure about ${{ github.GITHUB_REPOSITORY }}? Looks like it's ${{ github.repository }}
(https://help.github.com/en/actions/automating-your-workflow-with-github-actions/contexts-and-expression-syntax-for-github-actions#github-context).
As you're trying to push to Github registry, it wouldn't work in that way (see the hint at - https://github.com/elgohr/Publish-Docker-Github-Action#registry).
Furthermore there is no option like tag: $(echo $GITHUB_SHA | head -c7). You should probably read the docs more careful (https://github.com/elgohr/Publish-Docker-Github-Action#snapshot)

[L04DB4L4NC3R]

Got it working. Thanks a lot for the swift response