Put everything in same workflow

.gitea/workflows/pushImage.yaml

@@ -1,13 +1,25 @@
-name: Push image to registry
+name: Test, build and push image to registry
 on:
   push:
-    branches:
-      - main
 
 
 jobs:
+  phpunit-tests:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+      - name: Set up PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.3.0'
+      - name: Install dependencies
+        run: composer install
+      - name: Run PHPUnit tests
+        run: vendor/bin/phpunit --configuration phpunit.xml
   build-image:
     needs: phpunit-tests
+    if: success() && github.ref == 'refs/heads/main'
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository code