diff --git a/Dockerfile b/Dockerfile
index 811089e..8e4e16e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -29,6 +29,9 @@ RUN apt-get update && \
 
 COPY krb5.conf /etc/krb5.conf
 
+RUN useradd -rm app
+USER app
+
 ENV VIRTUAL_ENV=/venv/.venv \
     PATH="/venv/.venv/bin:$PATH"