diff --git a/react-frontend/docker-entrypoint.sh b/react-frontend/docker-entrypoint.sh
index 8c286d0..e844a3e 100644
--- a/react-frontend/docker-entrypoint.sh
+++ b/react-frontend/docker-entrypoint.sh
@@ -1,3 +1,5 @@
+#!/bin/env bash
+
 for file in /usr/share/nginx/html/*; do
     if [ -f "$file" ]; then
         envsubst < "$file" > "$file.tmp" && mv "$file.tmp" "$file"