Yes it's possible. I run a turborepo monorepo with multiple apps here on railway, so I hope I can help. The error you're getting means that your lockfile is out of sync with your package.json. Typically you just delete your lockfile/node_modules and run bun install then commit and push the new lockfile to solve this issue.

I've tried that too. I even used a turborepo configuration that globalizes the dependencies for node_modules in the root. I saw a post here about the bun version where the file was .lockb, and now it's just .lock, which is why it always fails.