use variable for registry

.github/workflows/build.yml

@@ -1,12 +1,9 @@
-name: Build Docker Images
+name: Build and Push Docker Images
 
 on:
   push:
     branches:
       - main
-  pull_request:
-    branches:
-      - main
 
 jobs:
   build:
@@ -14,64 +11,89 @@ jobs:
     permissions:
       packages: write
       contents: read
-    
+    strategy:
+      matrix:
+        project:
+          - admin-dashboard
+          - battleship
+          - calculator
+          - cv-project
+          - inventory
+          - library
+          - messages
+          - nodejs-mini-message-board
+          - portfolio
+          - restaurant
+          - shopping-cart
+          - signup_form
+          - tictactoe
+          - weather
     steps:
-      # Checkout the repository
       - name: Checkout code
         uses: actions/checkout@v4
-        
-      # Log into the GitHub Container Registry
-      - name: Login to GHCR
+
+      - name: Set Registry based on GITHUB_SERVER_URL
+        run: |
+          if [[ "${{ github.server_url }}" == *"github.com"* ]]; then
+            echo "REGISTRY=ghcr.io" >> $GITHUB_ENV
+          elif [[ "${{ github.server_url }}" == *"git.thecodedom.com"* ]]; then
+            echo "REGISTRY=git.thecodedom.com" >> $GITHUB_ENV
+          else
+            echo "REGISTRY=ghcr.io" >> $GITHUB_ENV
+          fi
+          echo "Registry is $REGISTRY"
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to GitHub Container Registry
         uses: docker/login-action@v3
         with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
+          registry: ${{ env.registry }}
+          username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
-          
-      # Define the list of project directories
-      - name: Set project list
-        id: set_projects
-        run: |
-          echo "projects<<EOF" >> $GITHUB_OUTPUT
-          echo "admin-dashboard" >> $GITHUB_OUTPUT
-          echo "battleship" >> $GITHUB_OUTPUT
-          echo "calculator" >> $GITHUB_OUTPUT
-          echo "cv" >> $GITHUB_OUTPUT
-          echo "cv-project" >> $GITHUB_OUTPUT
-          echo "inventory" >> $GITHUB_OUTPUT
-          echo "library" >> $GITHUB_OUTPUT
-          echo "messages" >> $GITHUB_OUTPUT
-          echo "nodejs-mini-message-board" >> $GITHUB_OUTPUT
-          echo "portfolio" >> $GITHUB_OUTPUT
-          echo "restaurant" >> $GITHUB_OUTPUT
-          echo "shopping-cart" >> $GITHUB_OUTPUT
-          echo "signup_form" >> $GITHUB_OUTPUT
-          echo "tictactoe" >> $GITHUB_OUTPUT
-          echo "todo" >> $GITHUB_OUTPUT
-          echo "weather" >> $GITHUB_OUTPUT
-          echo "auth-expressjs" >> $GITHUB_OUTPUT
-          echo "EOF" >> $GITHUB_OUTPUT
 
-      # Build and push Docker images for changed projects
-      - name: Build and push Docker images
-        id: build_push
+      - name: Build and Push Docker Image
+        id: build-and-push
         env:
-          PROJECTS: ${{ steps.set_projects.outputs.projects }}
+          IMAGE_NAME: ghcr.io/${{ github.repository_owner }}/odin-codeprojects/${{ matrix.project }}
         run: |
-          # Loop through each project directory
-          for project in $(cat <<< "$PROJECTS"); do
-            # Check if the project has changes
-            if git diff --quiet HEAD^ HEAD -- "$project" || git diff --quiet HEAD^ HEAD -- "${project}/devops"; then
-              echo "Changes detected in project: $project"
-              # Set the image name dynamically using github context
-              image_name="ghcr.io/${{ github.repository_owner }}/$project:${{ github.sha }}"
-              # Build the docker image
-              echo "Building image: $image_name"
-              docker build -t "$image_name" "$project/devops"
-              # Push the docker image to the github container registry
-              echo "Pushing image: $image_name"
-              docker push "$image_name"
+          IMAGE_TAG_LATEST=$IMAGE_NAME:latest
+
+          # Check if the latest image exists in the registry
+          IMAGE_EXISTS=$(curl -s -o /dev/null -w "%{http_code}" -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" "https://ghcr.io/v2/${{ github.repository_owner }}/${{ matrix.project }}/manifests/latest")
+          
+          
+          if [ "$IMAGE_EXISTS" == "200" ]; then
+            echo "Latest image exists, checking for changes..."
+
+            # Get the latest image digest
+            LATEST_DIGEST=$(curl -s -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" "https://ghcr.io/v2/${{ github.repository_owner }}/${{ matrix.project }}/manifests/latest" | jq -r '.config.digest')
+
+            # Get the digest of the current revision image
+            CURRENT_DIGEST=$(docker buildx bake --print ${{ matrix.project }}/devops/Dockerfile | grep '^sha256:' | head -n 1 | awk '{print $2}')
+           
+            if [ "$LATEST_DIGEST" == "$CURRENT_DIGEST" ]; then
+              echo "No changes detected, skipping build."
             else
-              echo "No changes detected in project: $project"
+              echo "Changes detected, building..."
+              docker buildx build \
+                --push \
+                -t $IMAGE_TAG_LATEST \
+                -f ${{ matrix.project }}/devops/Dockerfile \
+                --build-arg TARGET_REVISION=$(git rev-parse HEAD) \
+                --cache-from type=gha \
+                --cache-to type=gha,mode=max \
+                ${{ matrix.project }}
             fi
-          done
+          else
+            echo "Latest image does not exist, building..."
+            docker buildx build \
+              --push \
+              -t $IMAGE_TAG_LATEST \
+              -f ${{ matrix.project }}/devops/Dockerfile \
+              --build-arg TARGET_REVISION=$(git rev-parse HEAD) \
+              --cache-from type=gha \
+              --cache-to type=gha,mode=max \
+              ${{ matrix.project }}
+          fi