diff --git a/packaging/docker/custom/Dockerfile b/packaging/docker/custom/Dockerfile
index 3a4c6aa1bbd..924a631a68a 100644
--- a/packaging/docker/custom/Dockerfile
+++ b/packaging/docker/custom/Dockerfile
@@ -43,6 +43,7 @@ ARG GF_INSTALL_PLUGINS=""
 RUN if [ ! -z "${GF_INSTALL_PLUGINS}" ]; then \
       OLDIFS=$IFS; \
       IFS=','; \
+      set -e ; \
       for plugin in ${GF_INSTALL_PLUGINS}; do \
         IFS=$OLDIFS; \
         if expr match "$plugin" '.*\;.*'; then \