diff --git a/infra/docker-compose.yml b/infra/docker-compose.yml
index d8f5299..d81ce6f 100644
--- a/infra/docker-compose.yml
+++ b/infra/docker-compose.yml
@@ -91,6 +91,8 @@ services:
       FORGEJO__server__DOMAIN: ${FORGEJO_DOMAIN}
       FORGEJO__server__ROOT_URL: https://${FORGEJO_DOMAIN}/
       FORGEJO__server__SSH_DOMAIN: ${FORGEJO_DOMAIN}
+      # Skip the first-run wizard — everything is configured via env vars above.
+      FORGEJO__security__INSTALL_LOCK: "true"
     volumes:
       - forgejo-data:/data
     depends_on: