Graylog Docker images ignore GRAYLOG_HTTP_EXTERNAL_URI for REST API Docs

[skewty]

Expected Behavior

When I include GRAYLOG_HTTP_EXTERNAL_URI=http://1.2.3.4:9100/ in environment of container I expect the API to use that URI when it serves me API documentation.

Graylog UI works as expected using that environment variable. Only REST API Docs seem to ignore it.

Current Behavior

The container's private network IP is used instead. Can be confirmed by going to Developer Tools within browser and then
Network tab and reloading the page.

Possible Solution

Use the environment variable value if it is provided.

Context

Image: docker.io/graylog/graylog:5.2

[skewty]

Perhaps related to #7516

[skewty]

Trying different parameter / methods with PODMAN.

Notice the port number is 9000. I am assuming there is an issue with an internal proxy or redirect.

Notice in the other tab the icon. Port 9050 works fine for GUI and should also work for API.