Add deployment script and health checks for zero-downtime updates

docker-compose.example.yml

@@ -18,6 +18,12 @@ services:
     volumes:
       - ./data:/app/data
       - ./public/uploads:/app/public/uploads
+    healthcheck:
+      test: [ "CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:3000/api/daily" ]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 40s
     # Initialize DB if needed and run migration
     command: >
       sh -c "npx -y prisma@6.19.0 db push && node scripts/migrate-covers.mjs && node server.js"