diff --git a/Dockerfile b/Dockerfile
index cbe1b00..7532405 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,7 +9,7 @@ ARG GID=991
 ENV \
  ARCH_REPO=${ARCH_REPO} \
  UID=${UID} \
- GID=${GID} \
+ GID=${GID}
 
 RUN \
  addgroup -g "${GID}" app && \