Update docker-image.yml

Publish actions

.github/workflows/docker-image.yml

@@ -12,10 +12,15 @@ on:
 jobs:
 
   build:
-
     runs-on: ubuntu-latest
-
     steps:
     - uses: actions/checkout@v2
-    - name: Build the Docker image
-      run: docker build . --file Dockerfile --tag php-imagick:$(date +%s)
+    - name: Publish to Registry
+      uses: elgohr/Publish-Docker-Github-Action@master
+      with:
+        name: ivuorinen/docker-php-with-imagick
+        username: ${{ secrets.DOCKER_USERNAME }}
+        password: ${{ secrets.DOCKER_PASSWORD }}
+        default_branch: main
+        tags: "latest,php74"
+        cache: ${{ github.event_name != 'schedule' }}