ci: don't push moving edge tag to container registry

Author: striezel

.github/workflows/docker.yml

@@ -25,13 +25,6 @@ jobs:
           curl -X POST -i 'http://[::1]:3000/' --data '{ "x": ["2013-10-04 22:23:00", "2013-11-04 22:23:00", "2013-12-04 22:23:00"], "y": [1, 3, 6], "type": "scatter" }'
           echo -e "\nStopping container ..."
           docker stop -t 1 "$CONTAINER_ID"
-      - name: Push Docker image (edge) to registry
-        run: |
-          IMAGE_NAME=ghcr.io/${{ github.repository_owner }}/plotly-node-export-server/plotly-node-export-server:edge
-          docker tag plotly "$IMAGE_NAME"
-          echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
-          docker push "$IMAGE_NAME"
-          docker logout ghcr.io
       - name: Push Docker image (versioned tag) to registry
         run: |
           VERSION=$(git describe --always)