add proper healthcheck to liberaforms container

compose.yml

@@ -40,6 +40,12 @@ services:
         target: /custom-entrypoint.sh
     entrypoint: /custom-entrypoint.sh
     command: "/usr/bin/supervisord -n"
+    healthcheck:
+      test: ["CMD", "python", "-c", "import requests; print(requests.get('http://localhost:5000/').status_code)"]
+      timeout: 45s
+      interval: 10s
+      retries: 10
+      start_period: 1m
     environment:
       - ENABLE_LDAP=False
       - FLASK_DEBUG=False