Are you running a Node application?

Yes

Is your start command something like npm run start?

yes, it is npm start which executes node init-database.js && node server.js

https://docs.railway.com/guides/nodejs-sigterm

changed to node init-database.js && node server.js but still received email

Did you receive an email just once after you applied the change?

Or does it keep happening

after build completed, received email

looks, like issue was with health check, need to double confirm it

nah, looks like issue somewhere else