fix: update healthcheck and port configurations to use port 8080

docker-compose.prod.yml

@@ -58,7 +58,7 @@ services:
     expose:
       - "${APP_PORT:-8000}"
     healthcheck:
-      test: curl --fail http://127.0.0.1:80/api/health || exit 1
+      test: curl --fail http://127.0.0.1:8080/api/health || exit 1
       interval: 5s
       retries: 10
       timeout: 2s