ci(): added basic CI: build, test, docker build & push

.github/workflows/build.yaml

@@ -0,0 +1,50 @@
+name: Build & Test
+
+on:
+  workflow_call:
+    outputs:
+      artifact-name:
+        description: "Uploaded artifact name for downstream jobs"
+        value: ${{ jobs.build.outputs.artifact-name }}
+
+jobs:
+  build:
+    name: Build & Test
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    outputs:
+      artifact-name: ${{ steps.meta.outputs.artifact-name }}
+    steps:
+      - name: Checkout source
+        uses: actions/checkout@v6
+
+      - name: Set up JDK 21
+        uses: actions/setup-java@v5
+        with:
+          distribution: temurin
+          java-version: "21"
+          cache: gradle
+
+      - name: Set up Gradle
+        uses: gradle/actions/setup-gradle@v6
+
+      - name: Build
+        run: ./gradlew clean assemble --stacktrace --no-daemon
+
+      - name: Test
+        run: ./gradlew test --stacktrace --no-daemon
+
+      - name: Set artifact name
+        id: meta
+        run: echo "artifact-name=build-${{ github.run_id }}-${{ github.run_attempt }}" >> "$GITHUB_OUTPUT"
+
+      - name: Upload build artifacts
+        uses: actions/upload-artifact@v7
+        with:
+          name: ${{ steps.meta.outputs.artifact-name }}
+          path: |
+            build/libs/**
+            build/reports/**
+            build/test-results/**
+          retention-days: 7
+          if-no-files-found: error

.github/workflows/ci.yaml

@@ -0,0 +1,31 @@
+name: CI
+run-name: "${{ github.ref_name }} - ${{ github.event_name }} by @${{ github.actor }}"
+
+on:
+  push:
+    branches: [develop, main]
+    tags: ["v*"]
+  pull_request:
+    branches: [develop, main]
+
+concurrency:
+  group: ci-${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    name: Build & Test
+    uses: ./.github/workflows/build.yaml
+    permissions:
+      contents: read
+
+  docker:
+    name: Docker
+    needs: build
+    uses: ./.github/workflows/docker.yaml
+    permissions:
+      contents: read
+      packages: write
+    with:
+      push: ${{ github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/') }}
+    secrets: inherit

.github/workflows/docker.yaml

@@ -0,0 +1,74 @@
+name: Docker Build & Push
+
+on:
+  workflow_call:
+    inputs:
+      push:
+        description: "Push image to GHCR"
+        type: boolean
+        required: true
+    outputs:
+      image-digest:
+        description: "Pushed image digest (sha256:…)"
+        value: ${{ jobs.docker.outputs.image-digest }}
+      image-tags:
+        description: "Comma-separated list of applied tags"
+        value: ${{ jobs.docker.outputs.image-tags }}
+
+jobs:
+  docker:
+    name: Docker Build & Push
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    outputs:
+      image-digest: ${{ steps.build-push.outputs.digest }}
+      image-tags: ${{ steps.meta.outputs.tags }}
+    steps:
+      - name: Checkout source
+        uses: actions/checkout@v6
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v4
+
+      - name: Validate Dockerfile
+        if: inputs.push == false
+        uses: docker/build-push-action@v7
+        with:
+          context: .
+          file: ./Containerfile
+          call: check
+
+      - name: Log in to GHCR
+        if: inputs.push == true
+        uses: docker/login-action@v4
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract Docker metadata
+        if: inputs.push == true
+        id: meta
+        uses: docker/metadata-action@v6
+        with:
+          images: ghcr.io/${{ github.repository }}
+          tags: |
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=ref,event=branch
+            type=ref,event=pr
+            type=sha,prefix=sha-
+
+      - name: Build and push image
+        if: inputs.push == true
+        id: build-push
+        uses: docker/build-push-action@v7
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          provenance: false
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

buildPipeline.yml

@@ -1,28 +0,0 @@
-name: CI Build
-
-on:
-  pull_request:
-    branches: [ develop, main ]
-  push:
-    branches: [ develop ]
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Setup JDK 21
-        uses: actions/setup-java@v4
-        with:
-          java-version: '21'
-          distribution: 'temurin'
-
-      - name: Grant execute permission for gradlew
-        run: chmod +x gradlew
-
-      - name: Build project
-        run: ./gradlew build -x test
-