diff --git a/backend/Dockerfile b/backend/Dockerfile
index ff60280..b738158 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -15,8 +15,8 @@ COPY requirements.txt /
 RUN set -ex \
   && pip install --no-cache-dir -r /requirements.txt \
   && pip install --no-cache-dir gunicorn==$GUNICORN_VERSION \
-  && addgroup -S ${APP_USER} \
-  && adduser -S ${APP_USER} -G ${APP_USER} \
+  && groupadd ${APP_USER} \
+  && useradd -m -G ${APP_USER} ${APP_USER} \
   && mkdir -p /code/static \
   && mkdir -p /code/media \
   && mkdir -p /code/static_cdn \