diff --git a/app/docker-entry.sh b/app/docker-entry.sh
index 5ad3d9f..e5d9542 100644
--- a/app/docker-entry.sh
+++ b/app/docker-entry.sh
@@ -9,7 +9,7 @@ DB_PORT_NUMBER=${DB_PORT_NUMBER:-5432}
 MM_USERNAME=${MM_USERNAME:-mmuser}
 MM_PASSWORD=${MM_PASSWORD:-mmuser_password}
 MM_DBNAME=${MM_DBNAME:-mattermost}
-MM_CONFIG=/mattermost/config/config.json
+MM_CONFIG=${MM_CONFIG:-/mattermost/config/config.json}
 
 if [ "${1:0:1}" = '-' ]; then
     set -- platform "$@"