diff --git a/bin/docker-entrypoint.sh b/bin/docker-entrypoint.sh
index de272b112ee858e72913c0fe76fc0cb60a8037d8..8635541dfafaf5e4d2ca09358860ce0802118fe2 100755
--- a/bin/docker-entrypoint.sh
+++ b/bin/docker-entrypoint.sh
@@ -1,6 +1,5 @@
-#!/bin/sh
+#!/bin/bash
 set -e
-set -u
 
 # first arg is `-f` or `--some-option`
 if [ "${1#-}" != "$1" ]; then