Request: support defining the options in a .env file

[Sov3rain]

Hey there!

First of all, thank you for this great project. I want to deploy my own instance on Railway.app (similar to Heroku). I choose the option to deploy from a GitHub repo directly. It apparently uses the Dockerfile in the project and deploys the thing. It all starts to fall apart when Railway tries to launch the server: the port should not be defined manually but instead Railway should inject it when starting the server.

Right now I see no ability to get this port variable outside of the args from the start command. Is there any chance that it exists and I didn't notice?

[Sov3rain]

Nevermind, I found a solution. For those ending here, follow the following steps to be able to deploy to Railway.app:

• Deploy the project from a fork of this repo (Railway should automaticaly use the Dockerfile and deploy the thing).
• Go the Settings panel of your freshly deployed service, and go down to the Deploy section, under Custom Start Command change from node dist/src/index.js --http-port=$PORT to node dist/src/index.js --http-port=8080 for example.
• Go to the Variables panel and add a new variable as follow: PORT=8080.
• Redeploy and enjoy!

  Note: of course you can use any port of your liking, just be sure to update both the environment variable AND the custom start command!