Update .gitlab-ci.yml

.gitlab-ci.yml

-#name: Maven CI/CD
+heroku_deploy:
+  stage: production
+  script:
+    - gem install dpl
+    - dpl --provider=heroku --app=$HEROKU_APP_NAME --api-key=$HEROKU_API_KEY
 
-on:
-  push:
-    branches: [ main ]
-  pull_request:
-    branches: [ main ]
 
-#jobs:
-  build_and_test:
-
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v2
-      - name: Set up JDK 17
-        uses: actions/setup-java@v1
-        with:
-          java-version: 17
-
-
-
-
-      - name: Build project with Maven
-        run: mvn -B package --file pom.xml
-
-
-      - name: Deploy to Heroku. # Your custom step name
-        uses: gonuit/heroku-docker-deploy@v1.3.3 # GitHub action name (leave it as it is).
-        with:
-          # Below you must provide variables for your Heroku app.
-
-          # The email address associated with your Heroku account.
-          # If you don't want to use repository secrets (which is recommended) you can do:
-          # email: my.email@example.com
-          email: ${{ secrets.HEROKU_EMAIL }}
-
-          # Heroku API key associated with provided user's email.
-          # Api Key is available under your Heroku account settings.
-          heroku_api_key: ${{ secrets.HEROKU_API_KEY }}
-
-          # Name of the heroku application to which the build is to be sent.
-          heroku_app_name: ${{ secrets.HEROKU_APP_NAME }}