I found if you add the following to the env section of the docker-compose.yml it works properly:
> TTN_LW_CONSOLE_OAUTH_AUTHORIZE_URL: “http://your.domain.name:1885/oauth/authorize”
> TTN_LW_CONSOLE_OAUTH_TOKEN_URL: “http://your.domain.name:1885/oauth/token”
> TTN_LW_IS_OAUTH_UI_CANONICAL_URL: “http://your.domain.name:8080/oauth”
Not sure if the last line is necessary, you may also be able to just put an IP address in there
cheers
H