Add schedule to keep base up-to-date

.github/workflows/docker-image.yml

@@ -5,6 +5,8 @@ on:
     branches: [ master ]
   pull_request:
     branches: [ master ]
+  schedule:
+    - cron: '0 5 * * 3'
 
 jobs:
 
@@ -30,18 +32,18 @@ jobs:
           echo "DOCKER_USERNAME=remote" >> $GITHUB_ENV
 
     - name: Build the Docker image
-      run: docker build . --file Dockerfile --tag "$DOCKER_USERNAME/$REPOSITORY:latest"
+      run: docker build --pull . --file Dockerfile --tag "$DOCKER_USERNAME/$REPOSITORY:latest"
 
     - name: Log in to Docker Hub
       uses: docker/login-action@v1
-      if: github.ref == 'refs/heads/master' && github.event_name == 'push'
+      if: github.ref == 'refs/heads/master' && (github.event_name == 'push' || github.event_name == 'schedule')
       with:
         registry: ${{ env.DH_REGISTRY }}
         username: ${{ env.DOCKER_USERNAME }}
         password: ${{ secrets.DOCKER_PASSWORD }}
 
     - name: Push to Docker Hub
-      if: github.ref == 'refs/heads/master' && github.event_name == 'push'
+      if: github.ref == 'refs/heads/master' && (github.event_name == 'push' || github.event_name == 'schedule')
       run: docker push "$DOCKER_USERNAME/$REPOSITORY:latest"
     
     - name: Log in to the Container registry
@@ -59,7 +61,7 @@ jobs:
 
     - name: Push to GitHub
       uses: docker/build-push-action@v2
-      if: github.event_name == 'push'
+      if: github.event_name == 'push' || github.event_name == 'schedule'
       with:
         context: .
         push: true