Fly.io Simple Monorepo Demo

This is a simple monorepo demo to showcase how to deploy multiple apps to fly.io using one Dockerfile.

What's inside?

In the monorepo you'll find 2 apps and 4 packages

Apps

• api-gateway: an express.js server that proxies 2 enpoints.
• web-server: another express.js app that just returns the current path that a user enters

Packages

• db: A prisma package to globally use prisma. Check out this article to learn more

Utilities

• TypeScript for static type checking
• ESLint for code linting
• Prettier for code formatting

Setup

Install Dependencies

npm install

Run

npm run dev

Build

npm run build

Deploy

Install and setup flyctl

Create apps first before deploying

$ fly apps create api-gateway

$ fly apps create web-server

Check that the app variable name in the fly.[app-name].toml file is the same name you used to create the app in the previous step

# fly.gateway.toml
app = "monorepo-demo-web" <- this line
primary_region = "lax"
...

Also check that the PROJECT arg in the fly.[app-name].toml file (located in the [build.args] section) is the same name as your app folder.

#fly.gateway.toml
...
[build.args]
  PROJECT="api-gateway" # This should match the app name folder
...

If you're using prisma. Uncomment line 39 to generate types before the buid step

Deploy to fly.io

$ fly deploy --config fly.gateway.toml

$ fly deploy --config fly.web.toml

You also use the included deploy.sh to deploy all apps at once

$ chmod +x deploy.sh

$ ./deploy.sh