fix(docker): update healthcheck command to use nc for service check

Author: stephenway

docker-compose.yml

@@ -88,7 +88,7 @@ services:
       cms:
         condition: service_healthy
     healthcheck:
-      test: ['CMD-SHELL', 'curl -f http://localhost:3000 || exit 1']
+      test: ['CMD-SHELL', 'nc -z localhost 3000 || exit 1']
       interval: 30s
       timeout: 10s
       retries: 3