diff --git a/Dockerfile b/Dockerfile
index ba03149..aad1cc2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -17,7 +17,7 @@ RUN --mount=type=cache,target=/root/.cache/uv \
 FROM docker:29.1.3-cli
 
 ENV USER=karl
-ENV GROUPNAME=docker
+ENV GROUPNAME=docker-host
 ENV UID=1000
 ENV GID=994
 ENV PYTHONPATH="/app"