Fix action that validates image build

.github/workflows/run-tests.yaml

@@ -104,17 +104,8 @@ jobs:
         uses: actions/checkout@v2
         with:
           fetch-depth: 0
-      - name: 'Login to GitHub container registry'
-        uses: docker/login-action@v1
-        with:
-          registry: ghcr.io
-          username: ${{github.actor}}
-          password: ${{secrets.GITHUB_TOKEN}}
       - name: Build the API docker image
-        # run: 'docker build --file packages/api/Dockerfile .'
-        run: |
-          docker build . --file packages/api/Dockerfile --tag "ghcr.io/omnivore-app/backend:${GITHUB_SHA}" --tag ghcr.io/omnivore-app/backend:latest
-          docker push ghcr.io/omnivore-app/backend:${GITHUB_SHA}
+        run: 'docker build --file packages/api/Dockerfile .'
       - name: Build the content-fetch docker image
         run: 'docker build --file packages/content-fetch/Dockerfile .'
       - name: Build the inbound-email-handler docker image