Speed up CI builds by introducing dependency caching (#1874)

Co-authored-by: acx10 <acx10@users.noreply.github.com>

.github/workflows/docker-build-publish.yml

@@ -105,13 +105,14 @@ jobs:
         with:
           java-version: '21'
           distribution: 'temurin'
+          cache: 'gradle'
 
       - name: Run Backend Tests
         id: backend_tests
         working-directory: ./booklore-api
         run: |
           echo "Running backend tests with testcontainers..."
-          ./gradlew test
+          ./gradlew test --no-daemon --parallel --build-cache
         continue-on-error: true
 
       - name: Publish Test Results
@@ -204,42 +205,36 @@ jobs:
           echo "bump=$bump" >> $GITHUB_ENV
           echo "new_tag=$next_version" >> $GITHUB_ENV
 
-      - name: Generate Image Tag
-        id: set_image_tag
-        run: |
-          branch="${GITHUB_REF#refs/heads/}"
-          if [[ "$branch" == "master" ]]; then
-            image_tag="${{ env.new_tag }}"
-          elif [[ "$branch" == "develop" ]]; then
-            short_sha=$(git rev-parse --short HEAD)
-            image_tag="${{ env.latest_tag }}-develop-${short_sha}"
-          else
-            short_sha=$(git rev-parse --short HEAD)
-            image_tag="${short_sha}"
-          fi
-          echo "image_tag=$image_tag" >> $GITHUB_ENV
-          echo "Image tag: $image_tag"
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            booklore/booklore
+            ghcr.io/booklore-app/booklore
+          tags: |
+            type=sha,enable=${{ github.ref != github.event.repository.default_branch }}
+            type=raw,value={{branch}}-{{sha_short}},enable=${{ github.ref_name == 'develop' }}
+            type=raw,value=${{ env.new_tag }},enable=${{ github.ref_name == 'master' }}
+            type=raw,value=latest,enable=${{ github.ref_name == 'master' }}
 
-      - name: Build and Push Docker Image
-        run: |
-          docker buildx create --use
-          docker buildx build \
-            --platform linux/amd64,linux/arm64 \
-            --build-arg APP_VERSION=${{ env.image_tag }} \
-            --build-arg APP_REVISION=${{ github.sha }} \
-            --tag booklore/booklore:${{ env.image_tag }} \
-            --tag ghcr.io/booklore-app/booklore:${{ env.image_tag }} \
-            --push .
-
-      - name: Push Latest Tag (Only for Master)
-        if: github.ref == 'refs/heads/master'
-        run: |
-          docker buildx build \
-            --platform linux/amd64,linux/arm64 \
-            --build-arg APP_VERSION=${{ env.new_tag }} \
-            --tag booklore/booklore:latest \
-            --tag ghcr.io/booklore-app/booklore:latest \
-            --push .
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          build-args: |
+            APP_VERSION=${{ steps.meta.outputs.version }}
+            APP_REVISION=${{ github.sha }}
+          cache-from: |
+            type=gha
+            type=registry,ref=ghcr.io/booklore-app/booklore:buildcache
+          cache-to: |
+            type=gha,mode=max
+            type=registry,ref=ghcr.io/booklore-app/booklore:buildcache,mode=max
 
       - name: Update Release Draft (Only for Master)
         if: github.ref == 'refs/heads/master'
@@ -255,4 +250,4 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ github.token }}
         run: |
-          gh release edit ${{ env.new_tag }} --draft=true
+          gh release edit ${{ env.new_tag }} --draft=true

Dockerfile

@@ -4,11 +4,10 @@ FROM node:22-alpine AS angular-build
 WORKDIR /angular-app
 
 COPY ./booklore-ui/package.json ./booklore-ui/package-lock.json ./
-RUN npm config set registry http://registry.npmjs.org/ \
-    && npm config set fetch-retries 5 \
-    && npm config set fetch-retry-mintimeout 20000 \
-    && npm config set fetch-retry-maxtimeout 120000 \
-    && npm install --force
+RUN --mount=type=cache,target=/root/.npm \
+    npm config set registry http://registry.npmjs.org/ \
+    && npm ci --force
+
 COPY ./booklore-ui /angular-app/
 
 RUN npm run build --configuration=production
@@ -18,7 +17,13 @@ FROM gradle:8.14.3-jdk21-alpine AS springboot-build
 
 WORKDIR /springboot-app
 
+# Copy only build files first to cache dependencies
 COPY ./booklore-api/build.gradle ./booklore-api/settings.gradle /springboot-app/
+
+# Download dependencies (cached layer)
+RUN --mount=type=cache,target=/home/gradle/.gradle \
+    gradle dependencies --no-daemon
+
 COPY ./booklore-api/src /springboot-app/src
 
 # Inject version into application.yaml using yq
@@ -26,7 +31,8 @@ ARG APP_VERSION
 RUN apk add --no-cache yq && \
     yq eval '.app.version = strenv(APP_VERSION)' -i /springboot-app/src/main/resources/application.yaml
 
-RUN gradle clean build -x test
+RUN --mount=type=cache,target=/home/gradle/.gradle \
+    gradle clean build -x test --no-daemon --parallel
 
 # Stage 3: Final image
 FROM eclipse-temurin:21.0.9_10-jre-alpine