feat(config): add configurable check-in date restriction and persistent logging

- Add ENABLE_CHECKIN_DATE_RESTRICTION environment variable to allow flexible check-in testing
- Replace NODE_ENV check with configurable flag in check-in validation logic
- Implement persistent logging with external Docker volumes (slc_logs_prod)
- Configure backend-prod and nginx-prod to write logs to /var/log/app/ and /var/log/nginx-app/
- Increase log rotation limits (50MB, 10 files) for better debugging
- Update .env.example files with new check-in configuration

docker-compose.yml

@@ -34,15 +34,17 @@ services:
       - ./nginx/nginx.conf:/etc/nginx/nginx.conf:ro
       - ./nginx/conf.d.prod:/etc/nginx/conf.d:ro
       - ./ssl:/etc/nginx/ssl:ro
+      - app_logs_prod:/var/log/nginx-app
     ports:
       - "80:80"
       - "443:443"
     restart: always
+    command: ["/bin/sh", "-c", "nginx -g 'daemon off;' 2>&1 | tee -a /var/log/nginx-app/nginx.log"]
     logging:
       driver: "json-file"
       options:
-        max-size: "10m"
-        max-file: "3"
+        max-size: "50m"
+        max-file: "10"
     deploy:
       resources:
         limits:
@@ -175,13 +177,15 @@ services:
       - LOG_LEVEL=warn
     depends_on:
       - db-prod
-    command: ["node", "src/server.js"]
+    command: ["sh", "-c", "node src/server.js 2>&1 | tee -a /var/log/app/backend.log"]
     restart: always
+    volumes:
+      - app_logs_prod:/var/log/app
     logging:
       driver: "json-file"
       options:
-        max-size: "10m"
-        max-file: "3"
+        max-size: "50m"
+        max-file: "10"
     deploy:
       resources:
         limits:
@@ -248,6 +252,9 @@ volumes:
   postgres_data_prod:
     external: true
     name: slc_postgres_prod_data
+  app_logs_prod:
+    external: true
+    name: slc_logs_prod
 
 networks:
   slc_network: