diff --git a/uid-demo-Dockerfile b/uid-demo-Dockerfile
new file mode 100644
index 0000000..6dd5d8e
--- /dev/null
+++ b/uid-demo-Dockerfile
@@ -0,0 +1,6 @@
+FROM debian:stretch
+RUN groupadd -g 999 appuser && \
+    useradd -r -u 999 -g appuser appuser
+USER appuser
+COPY secrets.txt /tmp/secrets.txt
+CMD ["cat", "/tmp/secrets.txt"]