diff --git a/Dockerfile b/Dockerfile
index 79e4739..80ec312 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,6 +8,7 @@ ENV WALLABAG_VERSION=2.0.7 \
     SYMFONY__ENV__DATABASE_NAME=symfony \
     SYMFONY__ENV__DATABASE_USER=root \
     SYMFONY__ENV__DATABASE_PASSWORD=~ \
+    POSTGRES_USER=postgres \
     SYMFONY__ENV__SECRET=ovmpmAWXRCabNlMgzlzFXDYmCFfzGv \
     SYMFONY__ENV__MAILER_HOST=127.0.0.1 \
     SYMFONY__ENV__MAILER_USER=~ \