Now, if I run `sudo -i -u impress` on the production server, it opens a
login bash shell, with all of the app's environment variables exported,
straight to `/srv/impress`.
This will let me quickly `cd current; bin/rails console` to start poking
at whatever needs poked!
I'm not sure why this was causing problems? especially why *now*? But I was seeing errors in systemctl of it trying to parse this comment as an environment variable soooo ok!
Could just be an intermittent thing where like, a byte got dropped last time we transferred this file or something? but whatever, this has fixed it and also is reasonable comment placement!
Uhhh I think I must have made a mistake here where like… I must have left this in the service file for a while then accidentally deleted it from the Ansible playbook but not the live server? I had tested with this, then tested again without it and thought it wasn't necessary, but it turns out to have been necessary I guess? Ok!
This instructs Rails's ExecJS library to not bother looking for Node or something similar, because the app doesn't actually need to run any JS, even though the `react-rails` library (?) seems to be pretty eager about the possibility that we'll need to server-side-render stuff. (We should consider whether we want to though tbh? But… idk that would be a pretty different arch than what we've done with `jsbundling-rails` so like. idk whatever)
Mm, something in Rails was getting upset when working with session cookies because the `Host` header was `127.0.0.1:3000` instead of `beta.impress.openneo.net`. I only saw this log entry on important actions like login, so my hope is that this is why login is failing??
I was intentionally omitting these to start, because I didn't understand them well and didn't want to add things I didn't understand. But now I've checked in on them more and they seem standard and reasonable. Ok!
```
HTTP Origin header (https://beta.impress.openneo.net) didn't match request.base_url (http://127.0.0.1:3000)
```
Source: https://stackoverflow.com/a/73198861/107415
Okay, this is much simpler than the impress-2020 version where we symlinked node_modules and stuff - Bundler is just a lot better at this lol
Right now, the app is failing to start because we don't install Node—I wasn't sure whether we'd need to and whether I was gonna precompile the assets etc
Though now that I say that out loud, I guess part of the issue might be that I'm not sure the app is running in RAILS_ENV=production, I wonder if it still wants Node in that case?? I'll flip that switch in the service file now, then commit to save my place for the day, then try again with starting the app sometime and see what it says!
Yay it's working! We set up the box, install Ruby, upload a placeholder app, set it up as a service, and get it hooked up to nginx!
Next, we'll add the script to upload the latest version of the site. We just need to slot it into `/srv/impress/current`, run `bundle install`, and that should basically be that! (Oh, and we need to compile production assets—I wonder if it's useful to do that on the dev machine instead of on the target? That might save us from needing to install Node. Or maybe we'll have to anyway!)
