combined docker build and colcon build

Author: mistrynick

.github/workflows/prebuild.yaml .github/workflows/build.yaml.github/workflows/prebuild.yaml renamed to .github/workflows/build.yaml

@@ -32,3 +32,28 @@ jobs:
           tags: |
             ${{ secrets.DOCKERHUB_USERNAME }}/kestrel:latest
             ${{ secrets.DOCKERHUB_USERNAME }}/kestrel:${{ github.sha }}
+
+  colcon-build:
+    needs: docker-build-and-push 
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      
+      - name: Login to DockerHub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      
+      - name: Pull latest image
+        run: docker pull ${{ secrets.DOCKERHUB_USERNAME }}/kestrel:latest
+      
+      - name: Colcon build stage
+        run: |
+          docker run --rm \
+            -v ${{ github.workspace }}:/workspace \
+            -w /workspace \
+            ${{ secrets.DOCKERHUB_USERNAME }}/kestrel:latest \
+            bash -c "cd src && colcon build"