Add CI workflow for Docker builds

- Gitea Actions workflow to build and push to container registry
- Deployment compose file for pulling from registry

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.gitea/workflows/build-push.yml

@@ -0,0 +1,48 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:  # Manual trigger
+
+env:
+  REGISTRY: ${{ vars.REGISTRY_HOST }}  # Set in Gitea repo settings, e.g., gitea.local
+  IMAGE_NAME: ${{ gitea.repository }}  # e.g., username/ghbot
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest  # Or your self-hosted runner label
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Gitea Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ gitea.actor }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
+
+      - name: Extract metadata (tags, labels)
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=sha,prefix=
+            type=ref,event=branch
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

docker-compose.deploy.yml

@@ -0,0 +1,38 @@
+version: '3.8'
+
+# Deployment compose file - pulls from Gitea registry instead of building locally
+# Usage: docker compose -f docker-compose.deploy.yml up -d
+
+services:
+  discord-bot:
+    # Pull from Gitea registry (update with your actual registry URL)
+    image: ${REGISTRY_HOST:-gitea.local}/${REGISTRY_USER:-username}/ghbot:${IMAGE_TAG:-latest}
+    container_name: discord-bot
+    restart: unless-stopped
+    volumes:
+      # Seed file for initial database population (read-only)
+      - ./seed.json:/app/seed.json:ro
+      - ./conf:/app/conf:ro
+
+      # Sound effects directory (read-only)
+      - ./sfx:/app/sfx:ro
+
+      # Database persistence
+      - ./data:/app/data
+
+    environment:
+      - NODE_ENV=production
+
+    deploy:
+      resources:
+        limits:
+          memory: 512M
+        reservations:
+          memory: 256M
+
+    healthcheck:
+      test: ["CMD", "node", "-e", "process.exit(0)"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 40s