On Heroku, I can run heroku run rails console, and (eventually) what I get is the rails console. That’s what I want! I so rarely want an ssh shell.
On Render, I have succeeded in running the shell directly for a particular server (render ssh [name-of-service]), but it just opens up with the shell, and I have to run rails c and wait, like an animal.
If I could figure out how to add to the login shell’s profile/rc file (I haven’t been successful), I could maybe tell it to run the shell by default, or when an env variable is passed. A normal SSH command forwards all LC_* environment variables, so on other servers I control I do a little dance (if [ -n "$LC_RAILS_SESSION" ]; then… and conditionally run the shell. It works great and is very convenient!
Any ideas about how to run a command after login? Even if it ran every time that would be more convenient.