chore: add github jobs

Author: chrootlogin

.github/workflows/build-test-container.yml

@@ -0,0 +1,91 @@
+name: Build, Test and Publish Container
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  packages: write
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: erhardtconsulting/database-development-app
+
+jobs:
+  maven:
+    name: Maven build and tests
+    runs-on: ubuntu-24.04
+    outputs:
+      app-version: ${{ steps.project-version.outputs.version }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Java 24
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: "24"
+          cache: maven
+
+      - name: Read project version
+        id: project-version
+        run: echo "version=$(./mvnw -q -DforceStdout help:evaluate -Dexpression=project.version)" >> "$GITHUB_OUTPUT"
+
+      - name: Run fast tests
+        run: ./mvnw -B test
+
+      - name: Run Testcontainers integration tests
+        run: ./mvnw -B -Ptestcontainers test
+
+      - name: Build application package
+        run: ./mvnw -B package -DskipTests
+
+  container:
+    name: Container build and publish
+    runs-on: ubuntu-24.04
+    needs: maven
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GitHub Container Registry
+        if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Prepare image tags
+        id: image-tags
+        run: |
+          SHORT_SHA="${GITHUB_SHA::7}"
+          VERSION="${{ needs.maven.outputs.app-version }}"
+          IMAGE="${REGISTRY}/${IMAGE_NAME}"
+          {
+            echo "tags<<EOF"
+            echo "${IMAGE}:${VERSION}-${SHORT_SHA}"
+            if [ "${GITHUB_EVENT_NAME}" = "push" ] && [ "${GITHUB_REF}" = "refs/heads/main" ]; then
+              echo "${IMAGE}:latest"
+            fi
+            echo "EOF"
+          } >> "$GITHUB_OUTPUT"
+
+      - name: Build container image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: Dockerfile
+          platforms: linux/amd64
+          push: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
+          tags: ${{ steps.image-tags.outputs.tags }}

README.md

@@ -96,6 +96,15 @@ podman compose up --build
 
 Danach ist die API unter `http://localhost:8080/api/tickets` erreichbar.
 
+## GitHub Actions und Container Registry
+
+Das Repository enthält einen GitHub-Actions-Workflow für die App:
+
+- Pull Requests führen `./mvnw test`, `./mvnw -Ptestcontainers test` und einen Docker-Build ohne Push aus.
+- Pushes auf `main` führen dieselben Prüfungen aus und veröffentlichen das Image in der GitHub Container Registry.
+- Das veröffentlichte Image heisst `ghcr.io/erhardtconsulting/database-development-app`.
+- `latest` wird nur von `main` gesetzt; zusätzlich erhält jedes Image einen Versions- und Commit-Tag.
+
 ## Swagger und OpenAPI
 
 Die API-Dokumentation ist in der laufenden Anwendung verfügbar: