Set GO_PACKAGE in the gen_assets step

.gitlab-ci.yml

@@ -38,7 +38,7 @@ gen_ui:
     - DEBIAN_FRONTEND=noninteractive apt-get -y install --no-install-recommends brotli xxd
     - cd ui
     - npm install
-    - npm run build
+    - env GO_PACKAGE=git.autistici.org/smol/idp npm run build
   artifacts:
     paths:
       - ui/assets