Add a base url for proxies

[kordianbruck]

Hey,

I'm running this using the docker image and nginx. I use nginx to reverse proxy the requests to the docker image. Unfortunately you guys use absolute paths and have no means on how to set the base url for the app. So the assets cannot be loaded as they mismatch to / while the app is actually being served from /beta/ with a location match.

For reference gogs lets you set the base url in the config: gogs/gogs#1844

Proxy config:

location /beta/ {
            proxy_pass  http://127.0.0.1:3000/;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto https;
            proxy_redirect    off;
}

Ideally one could set this using a ENV variable. Alternatively you will use relative paths - might not be the smartest solution.

[joshdholtz]

@kordianbruck Are you able to submit a PR for this? 😊

[kordianbruck]

@joshdholtz I wouldn't know much about ruby really. But I'm happy to try. Any hints?

[joshdholtz]

@kordianbruck I always just look at other code examples while learning new languages 🙃

[maxep]

Hey! You can set the RAILS_RELATIVE_URL_ROOT variable

[bunnyc1986]

the submit button also needs to be fixed after setting RAILS_RELATIVE_URL_ROOT