Auto-configure server on first Docker run

docker-compose.yml

@@ -1,5 +1,3 @@
-version: '3.8'
-
 services:
   postgres:
     image: postgres:16-alpine
@@ -41,6 +39,7 @@ services:
       - REDFLAG_DB_PASSWORD=redflag
       - REDFLAG_SERVER_HOST=0.0.0.0
       - REDFLAG_SERVER_PORT=8080
+    command: ["sh", "-c", "if [ ! -f /app/.env ]; then ./redflag-server --setup; fi && ./redflag-server --migrate && ./redflag-server"]
     restart: unless-stopped
 
 volumes: