Update docker build workflow

.github/workflows/docker.yml

@@ -5,29 +5,22 @@ on:
     branches: [ master ]
 
 jobs:
-  push_to_registry:
-    name: Push Docker image to Docker Hub
+  build:
     runs-on: ubuntu-latest
     steps:
-      - name: Check out the repo
+      - name: git checkout
         uses: actions/checkout@v2
-      
-      - name: Log in to Docker Hub
-        uses: docker/login-action@f054a8b539a109f9f41c372932f1ae047eff08c9
-        with:
-          username: ${{ secrets.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKER_PASSWORD }}
-      
-      - name: Extract metadata (tags, labels) for Docker
-        id: meta
-        uses: docker/metadata-action@98669ae865ea3cffbcbaa878cf57c20bbf1c6c38
-        with:
-          images: philberty/gccrs
-      
-      - name: Build and push Docker image
-        uses: docker/build-push-action@ad44023a93711e3deb337508980b4b5e9bcdc5dc
-        with:
-          context: .
-          push: true
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
+
+      - name: docker login
+        env:
+          DOCKER_USER: ${{ secrets.DOCKER_USERNAME }}
+          DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
+        run: |
+          docker login -u $DOCKER_USER -p $DOCKER_PASSWORD
+
+      - name: docker build
+        run: docker build .
+
+      - name: docker push
+        run: docker push ${{secrets.DOCKER_USER}}/gccrs
+