Running a Rails app on a newly provisioned VM

This article assumes you're already connected to a VM that has rbenv, postgres, and caddy installed, and an /apps folder created.
Steps
- Point the domain/subdomain that you want to use, to the ip address of the server (create an A record).
- Connect to that newly created domain using the VS Code Remote SSH extension (assuming you have an authorised ssh key or password).
  1. ```
  ssh root@staging.mydomain.com
```
- Pull your codebase down from Github into the apps folder. When prompted for credentials, don't enter your normal password. Instead, create a personal token here and enter it when prompted for a password.
  1. ```
  cd /apps
  git clone https://github.com/my_repo app_name
```
- Copy over your environment variables
- Run bundle install, rake db:create and rake db:migrate as usual
- Add passenger to your Gemfile
  1. ```
  gem 'passenger'
  bundle install
```
- Start a new daemonized server with passenger on port 1111 (use a different port if this VM already has other apps that are using that port)
  1. ```
  bundle exec passenger start --daemonize -p 1111
```
- Configure caddy to forward your newly running app (on port 1111) to your subdomain (from step 1)
  1. Open up /etc/caddy/Caddyfile
  2. ```
  staging.mydomain.com {
    reverse_proxy localhost:1111
  }
```
3. Restart caddy
4. ```
service caddy restart
```
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