improve workflow

Author: corsicanec82

.github/workflows/pyci.yml

@@ -12,13 +12,17 @@ jobs:
   build:
     runs-on: ubuntu-latest
 
+    strategy:
+      matrix:
+        python-version: [3.8, 3.9]
+
     steps:
       - uses: actions/checkout@v2
 
-      - name: Set up Python
+      - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v2
         with:
-          python-version: '3.8'
+          python-version: ${{ matrix.python-version }}
 
       - name: Install dependencies
         run: |
@@ -35,20 +39,22 @@ jobs:
           make test
 
 
-      - name: Set up Docker Buildx
-        if: ${{ github.event_name == 'push' }}
-        uses: docker/setup-buildx-action@v1
+  deploy:
+    needs: build
+    runs-on: ubuntu-latest
+    if: ${{ github.event_name == 'push' }}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: docker/setup-buildx-action@v1
 
-      - name: Login to Docker Hub
-        if: ${{ github.event_name == 'push' }}
-        uses: docker/login-action@v1
+      - uses: docker/login-action@v1
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
 
-      - name: Build and push
-        if: ${{ github.event_name == 'push' }}
-        uses: docker/build-push-action@v2
+      - uses: docker/build-push-action@v2
         with:
           context: .
           push: true