ci: separate PR validation from deployment workflow

Author: Harsche

.github/workflows/ci-cd.yml

@@ -3,11 +3,10 @@ name: CI
 on:
   push:
     branches: ["main"]
-  pull_request:
-    branches: ["main"]
 
   workflow_dispatch:
 
+
 jobs:
   build:
     runs-on: ubuntu-latest

.github/workflows/pr-validation.yml

@@ -0,0 +1,24 @@
+name: PR Validation
+
+on:
+  pull_request:
+    branches: ["main", "dev"]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      # Build the Docker image to verify compilation and packaging (push is set to false)
+      - name: Build Docker image
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          file: Dockerfile
+          push: false