diff --git a/docker/entrypoint.sh b/docker/entrypoint.sh
index f256c7f16..ba33f29c1 100755
--- a/docker/entrypoint.sh
+++ b/docker/entrypoint.sh
@@ -20,7 +20,7 @@ function setEnvironmentVariable() {
 }
 
 # Grep for variables that look like MySQL (APP_)
-for _curVar in `env | grep _APP_ | awk -F = '{print $1}'`;do
+for _curVar in $(env | grep _APP_ | awk -F = '{print $1}');do
     # awk has split them by the equals sign
     # Pass the name and value to our function
     setEnvironmentVariable ${_curVar} ${!_curVar}
@@ -30,4 +30,4 @@ echo newrelic.license = \"$_APP_NEWRELIC_KEY\" > /etc/php/7.3/fpm/conf.d/newreli
 echo newrelic.license = \"$_APP_NEWRELIC_KEY\" > /etc/php/7.3/cli/conf.d/newrelic.ini
 
 # Start supervisord and services
-/usr/bin/supervisord -n -c /etc/supervisord.conf
\ No newline at end of file
+/usr/bin/supervisord -n -c /etc/supervisord.conf