incorrect url Oauth2

[Aviortheking]

• Gitea version (or commit ref): 1.9.0+dev-191-g2933ae4e8
• Git version: not relevant
• Operating system: docker in linux
• Database (use [x]):
  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • Yes (provide example URL)
  • No
  • Not relevant
• Log gist:

Description

The url in the @avior is not the one set in ROOT_URL (should be: git.delta-wings.net) config but the url passed by my proxy (nginx) (localhost:3002)

Screenshots