ci: add automated Gitea Actions deployment workflow for Synology NAS

- Add Gitea Actions workflow for automated build and deployment
- Add deployment script for Synology NAS
- Add Docker Compose configurations for production deployment
- Add Gitea runner setup
- Add comprehensive documentation for CI/CD setup
- Add health check endpoint for deployment verification
- Update .gitignore for CI/CD artifacts

docker-compose.gitea-runner.yml

@@ -0,0 +1,74 @@
+version: "3.9"
+
+# Gitea Runner für automatische CI/CD Deployments
+# Dieses Compose-File wird auf der Synology NAS deployed
+
+services:
+  gitea-runner:
+    image: gitea/act_runner:latest
+    container_name: gitea-runner
+    restart: unless-stopped
+
+    environment:
+      # Gitea Instance URL - Passe dies an deine Gitea-Installation an
+      - GITEA_INSTANCE_URL=${GITEA_URL:-http://gitea:3000}
+
+      # Runner Registration Token - Wird aus Gitea UI generiert
+      - GITEA_RUNNER_REGISTRATION_TOKEN=${RUNNER_TOKEN}
+
+      # Runner Name - Wird in Gitea angezeigt
+      - GITEA_RUNNER_NAME=${RUNNER_NAME:-synology-runner}
+
+      # Runner Labels - Definiert welche Workflows dieser Runner ausführen kann
+      # Format: label:docker://image
+      - GITEA_RUNNER_LABELS=ubuntu-latest:docker://catthehacker/ubuntu:act-latest,ubuntu-22.04:docker://catthehacker/ubuntu:act-22.04,ubuntu-20.04:docker://catthehacker/ubuntu:act-20.04
+
+      # Runner Capacity - Maximale Anzahl gleichzeitiger Jobs
+      - GITEA_RUNNER_CAPACITY=${RUNNER_CAPACITY:-1}
+
+      # Log Level
+      - GITEA_RUNNER_LOG_LEVEL=${LOG_LEVEL:-info}
+
+    volumes:
+      # Runner Daten (Config, Cache, etc.)
+      - runner-data:/data
+
+      # Docker Socket - Ermöglicht dem Runner Docker-Container zu starten
+      - /var/run/docker.sock:/var/run/docker.sock
+
+      # Optional: Workspace für Job-Artefakte
+      - runner-workspace:/workspace
+
+    networks:
+      - gitea-network
+
+    # Health Check
+    healthcheck:
+      test: ["CMD", "pgrep", "-f", "act_runner"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 40s
+
+    # Resource Limits (optional, aber empfohlen)
+    deploy:
+      resources:
+        limits:
+          cpus: '2'
+          memory: 2G
+        reservations:
+          cpus: '1'
+          memory: 512M
+
+volumes:
+  runner-data:
+    driver: local
+  runner-workspace:
+    driver: local
+
+networks:
+  gitea-network:
+    # Wenn Gitea in einem separaten Netzwerk läuft, verwende:
+    # external: true
+    # Ansonsten:
+    driver: bridge