Allow to write to uv.lock

{{cookiecutter.project_slug}}/compose/local/django/Dockerfile

@@ -18,7 +18,7 @@ RUN apt-get update && apt-get install --no-install-recommends -y \
 # Requirements are installed here to ensure they will be cached.
 RUN --mount=type=cache,target=/root/.cache/uv \
     --mount=type=bind,source=pyproject.toml,target=pyproject.toml \
-    --mount=type=bind,source=uv.lock,target=uv.lock \
+    --mount=type=bind,source=uv.lock,target=uv.lock:rw \
     uv sync --no-install-project
 
 ADD . ${APP_HOME}