diff --git a/Dockerfile b/Dockerfile
index e7ab468..4c6636e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -35,4 +35,6 @@ EXPOSE 8080
 HEALTHCHECK --interval=30s --timeout=5s --retries=3 \
     CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8080/images').read()" || exit 1
 
-CMD ["uv", "run", "python", "main.py"]
+# --frozen --no-dev: senza, uv run ri-sincronizza il gruppo dev
+# (pytest/ruff) a OGNI avvio del container, scaricando pacchetti a runtime
+CMD ["uv", "run", "--frozen", "--no-dev", "python", "main.py"]