More trying to understand github actions.

.github/workflows/publish-to-docker.yml

@@ -7,9 +7,6 @@ on:
   # Triggers the workflow on push or pull request events but only for the master branch
   push:
     branches: [ master ]
-  pull_request:
-    branches: [ master ]
-
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch:
 
@@ -48,7 +45,5 @@ jobs:
         # uses: docker/build-push-action@4a531fa5a603bab87dfa56578bd82b28508c9547
         uses: docker/build-push-action@v2.2.2
         with:
-          username: ${{ secrets.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKER_PASSWORD }}
-          repository: lucasw89/portfolio
-          tag_with_ref: true
+          file: ${{ $GITHUB_WORKSPACE }}/Dockerfile
+          push: true