feat: kaniko image building and dependacy caching

.github/workflows/ci.yml

@@ -26,6 +26,16 @@ jobs:
           distribution: 'temurin'
           java-version: '25'
 
+      - name: Cache Gradle dependencies
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          restore-keys: |
+            gradle-${{ runner.os }}-
+
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v4
 
@@ -45,6 +55,9 @@ jobs:
   publish:
     needs: build
     runs-on: ubuntu-latest
+    container:
+      image: gcr.io/kaniko-project/executor:debug
+      options: --entrypoint ""
 
     steps:
       - name: Checkout code
@@ -56,37 +69,33 @@ jobs:
           name: build-artifact
           path: build/libs
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Log in to Docker Hub
-        uses: docker/login-action@v3
-        with:
-          username: ${{ env.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
-
       - name: Generate version tag
         id: version
         run: |
-          if [[ $GITHUB_REF == refs/tags/* ]]; then
-            VERSION_TAG=${GITHUB_REF#refs/tags/v}
-          elif [[ $GITHUB_REF == refs/heads/main ]]; then
-            SHORT_SHA=$(git rev-parse --short HEAD)
+          if [ "${GITHUB_REF#refs/tags/}" != "$GITHUB_REF" ]; then
+            VERSION_TAG=$(echo "$GITHUB_REF" | sed 's|refs/tags/v||')
+          elif [ "$GITHUB_REF" = "refs/heads/main" ]; then
+            SHORT_SHA=$(echo "$GITHUB_SHA" | cut -c1-7)
             VERSION_TAG="main-${SHORT_SHA}"
           else
-            SHORT_SHA=$(git rev-parse --short HEAD)
+            SHORT_SHA=$(echo "$GITHUB_SHA" | cut -c1-7)
             VERSION_TAG="develop-${SHORT_SHA}"
           fi
           echo "tag=$VERSION_TAG" >> $GITHUB_OUTPUT
-          echo "Generated version tag: $VERSION_TAG"
 
-      - name: Build and push Docker image
-        uses: docker/build-push-action@v5
-        with:
-          context: .
-          push: true
-          tags: |
-            ${{ env.DOCKERHUB_USERNAME }}/devoops-backend-poc:${{ steps.version.outputs.tag }}
-            ${{ env.DOCKERHUB_USERNAME }}/devoops-backend-poc:latest
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
+      - name: Set up Kaniko Docker config
+        run: |
+          mkdir -p /kaniko/.docker
+          echo "{\"auths\":{\"https://index.docker.io/v1/\":{\"auth\":\"$(echo -n $DOCKERHUB_USERNAME:$DOCKERHUB_TOKEN | base64)\"}}}" > /kaniko/.docker/config.json
+        env:
+          DOCKERHUB_TOKEN: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and push Docker image with Kaniko
+        run: |
+          /kaniko/executor \
+            --context=$GITHUB_WORKSPACE \
+            --dockerfile=$GITHUB_WORKSPACE/Dockerfile \
+            --destination=${{ env.DOCKERHUB_USERNAME }}/devoops-backend-poc:${{ steps.version.outputs.tag }} \
+            --destination=${{ env.DOCKERHUB_USERNAME }}/devoops-backend-poc:latest \
+            --cache=true \
+            --cache-repo=${{ env.DOCKERHUB_USERNAME }}/devoops-backend-poc-cache

.github/workflows/pr-check.yml

@@ -20,6 +20,16 @@ jobs:
           distribution: 'temurin'
           java-version: '25'
 
+      - name: Cache Gradle dependencies
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          restore-keys: |
+            gradle-${{ runner.os }}-
+
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@0b6dd653ba04f4f93bf581ec31e66cbd7dcb644d