diff --git a/Dockerfile.r b/Dockerfile.r
index b0dcbde6366eb77cb9e90fd75d4ec1cd6afda8c2..9135be125975f0a0e3ee10c60e39c2052b3fc7ca 100644
--- a/Dockerfile.r
+++ b/Dockerfile.r
@@ -8,6 +8,9 @@ ENV SHINY_LOG_STDERR=1
 EXPOSE 3838
 CMD ["shiny-server"]
 
+RUN addgroup --gid 999 shiny \
+ && adduser --disabled-password --gecos '' --uid 999 --gid 999 shiny
+
 # install dependencies
 RUN apt-get update \
  && apt-get install -y \