Add PostgreSQL database. Make sure to add this first!

railway add --database postgres

Add your application service.

railway add --service bun-react-db --variables DATABASE_URL=${{Postgres.DATABASE_URL}}

5

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Step 5

After the services have been created and connected, deploy the application to Railway. By default, services are only accessible within Railway’s private network. To make your app publicly accessible, you need to generate a public domain.

terminal

Deploy your application

railway up

Generate public domain

railway domain

Your app is now live! Railway auto-deploys on every GitHub push.

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## 

[​

](#method-2-deploy-via-dashboard)

Method 2: Deploy via Dashboard

1

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Step 1

Create a new project

1.  Go to [Railway Dashboard](http://railway.com/dashboard?utm_medium=integration&utm_source=docs&utm_campaign=bun)
2.  Click **”+ New”** → **“GitHub repo”**
3.  Choose your repository

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Step 2

Add a PostgreSQL database, and connect this database to the service

Step 2 is only necessary if your application uses a database. If you don’t need PostgreSQL, skip to Step 3.

1.  Click **”+ New”** → **“Database”** → **“Add PostgreSQL”**
2.  After the database has been created, select your service (not the database)
3.  Go to **“Variables”** tab
4.  Click **”+ New Variable”** → **“Add Reference”**
5.  Select `DATABASE_URL` from postgres

3

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Step 3

Generate a public domain

1.  Select your service
2.  Go to **“Settings”** tab
3.  Under **“Networking”**, click **“Generate Domain”**

Your app is now live! Railway auto-deploys on every GitHub push.

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## 

[​

](#configuration-optional)

Configuration (Optional)

By default, Railway uses [Nixpacks](https://docs.railway.com/guides/build-configuration#nixpacks-options) to automatically detect and build your Bun application with zero configuration. However, using the [Railpack](https://docs.railway.com/guides/build-configuration#railpack) application builder provides better Bun support, and will always support the latest version of Bun. The pre-configured templates use Railpack by default. To enable Railpack in a custom project, add the following to your `railway.json`:

railway.json

{ "$schema": "https://railway.com/railway.schema.json", "build": { "builder": "RAILPACK" } }

For more build configuration settings, check out the [Railway documentation](https://docs.railway.com/guides/build-configuration).

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