ci: add Gitea Actions workflow + production compose

- .gitea/workflows/deploy.yml: build, push to Gitea registry, SSH deploy
- docker-compose.prod.yml: pulls pre-built image from registry (for server)
- docker-compose.yml: kept for local development (builds from source)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitea/workflows/deploy.yml

@@ -0,0 +1,58 @@
+name: Build & Deploy
+
+on:
+  push:
+    branches: [master]
+
+env:
+  REGISTRY: code.letsbe.solutions
+  IMAGE: letsbe/letsbebiz-site
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Login to Gitea Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ secrets.REGISTRY_USER }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: |
+            ${{ env.REGISTRY }}/${{ env.IMAGE }}:latest
+            ${{ env.REGISTRY }}/${{ env.IMAGE }}:${{ github.sha }}
+          build-args: |
+            DATABASE_URI=postgresql://build:build@localhost:5432/build
+            PAYLOAD_SECRET=${{ secrets.PAYLOAD_SECRET }}
+            NEXT_PUBLIC_SITE_URL=${{ secrets.NEXT_PUBLIC_SITE_URL }}
+            NEXT_PUBLIC_CALCOM_URL=${{ secrets.NEXT_PUBLIC_CALCOM_URL }}
+          cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE }}:buildcache
+          cache-to: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE }}:buildcache,mode=max
+
+  deploy:
+    needs: build-and-push
+    runs-on: ubuntu-latest
+    steps:
+      - name: Deploy to server
+        uses: appleboy/ssh-action@v1
+        with:
+          host: ${{ secrets.SERVER_HOST }}
+          username: ${{ secrets.SERVER_USER }}
+          key: ${{ secrets.SERVER_SSH_KEY }}
+          script: |
+            cd ${{ secrets.DEPLOY_PATH }}
+            docker pull ${{ env.REGISTRY }}/${{ env.IMAGE }}:latest
+            docker compose up -d --no-build
+            docker image prune -f