diff --git a/Dockerfile b/Dockerfile
index 184e010..9eb6e58 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -130,5 +130,5 @@ RUN set -eux; \
 	mkdir -p var/cache var/log; \
 	composer dump-autoload --classmap-authoritative --no-dev; \
 	composer dump-env prod; \
-	DATABASE_URL="" composer run-script --no-dev post-install-cmd; \
+	DATABASE_URL="postgresql://dummy:dummy@dummy:5432/dummy?serverVersion=15&charset=utf8" composer run-script --no-dev post-install-cmd; \
 	chmod +x bin/console; sync;