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Google Cloud Run is a managed platform for deploying and scaling serverless applications. Google handles the infrastructure for you. In this guide, we will deploy a Bun HTTP server to Google Cloud Run using a Dockerfile.
Before continuing, make sure you have:
1

Initialize gcloud by select/creating a project

Make sure that you’ve initialized the Google Cloud CLI. This command logs you in, and prompts you to either select an existing project or create a new one.For more help with the Google Cloud CLI, see the official documentation.
terminal
gcloud init

Welcome! This command will take you through the configuration of gcloud.

You must sign in to continue. Would you like to sign in (Y/n)? Y
You are signed in as [email@example.com].

Pick cloud project to use:
 [1] existing-bun-app-1234
 [2] Enter a project ID
 [3] Create a new project
Please enter numeric choice or text value (must exactly match list item): 3

Enter a Project ID. my-bun-app
Your current project has been set to: [my-bun-app]

The Google Cloud CLI is configured and ready to use!
2

(Optional) Store your project info in environment variables

Set variables for your project ID and number so they’re easier to reuse in the following steps.
terminal
PROJECT_ID=$(gcloud projects list --format='value(projectId)' --filter='name="my bun app"')
PROJECT_NUMBER=$(gcloud projects list --format='value(projectNumber)' --filter='name="my bun app"')

echo $PROJECT_ID $PROJECT_NUMBER

my-bun-app-... [PROJECT_NUMBER]
3

Link a billing account

List your available billing accounts and link one to your project:
terminal
gcloud billing accounts list

ACCOUNT_ID            NAME                OPEN  MASTER_ACCOUNT_ID
[BILLING_ACCOUNT_ID]  My Billing Account  True
Link your billing account to your project. Replace [BILLING_ACCOUNT_ID] with the ID of your billing account.
terminal
gcloud billing projects link $PROJECT_ID --billing-account=[BILLING_ACCOUNT_ID]

billingAccountName: billingAccounts/[BILLING_ACCOUNT_ID]
billingEnabled: true
name: projects/my-bun-app-.../billingInfo
projectId: my-bun-app-...
4

Enable APIs and configure IAM roles

Activate the necessary services and grant Cloud Build permissions:
terminal
gcloud services enable run.googleapis.com cloudbuild.googleapis.com
gcloud projects add-iam-policy-binding $PROJECT_ID \
  --member=serviceAccount:$PROJECT_NUMBER-compute@developer.gserviceaccount.com \
  --role=roles/run.builder
These commands enable Cloud Run (run.googleapis.com) and Cloud Build (cloudbuild.googleapis.com), which are required for deploying from source. Cloud Run runs your containerized app, while Cloud Build handles building and packaging it.The IAM binding grants the Compute Engine service account ($PROJECT_NUMBER-compute@developer.gserviceaccount.com) permission to build and deploy images on your behalf.
5

Add a Dockerfile

Create a new Dockerfile in the root of your project. This file contains the instructions to initialize the container, copy your local project files into it, install dependencies, and start the application.
Dockerfile
# Use the official Bun image to run the application
FROM oven/bun:latest

# Copy the package.json and bun.lock into the container
COPY package.json bun.lock ./

# Install the dependencies
# Install the dependencies
RUN bun install --production --frozen-lockfile

# Copy the rest of the application into the container
COPY . .

# Run the application
CMD ["bun", "index.ts"]
Make sure that the start command corresponds to your application’s entry point. This can also be CMD ["bun", "run", "start"] if you have a start script in your package.json.This image installs dependencies and runs your app with Bun inside a container. If your app doesn’t have dependencies, you can omit the RUN bun install --production --frozen-lockfile line.This image installs dependencies and runs your app with Bun inside a container. If your app doesn’t have dependencies, you can omit the RUN bun install --production --frozen-lockfile line.
Create a new .dockerignore file in the root of your project. This file contains the files and directories that should be excluded from the container image, such as node_modules. This makes your builds faster and smaller:
.dockerignore
node_modules
Dockerfile*
.dockerignore
.git
.gitignore
README.md
LICENSE
.vscode
.env
# Any other files or directories you want to exclude
6

Deploy your service

Make sure you’re in the directory containing your Dockerfile, then deploy directly from your local source:
Update the --region flag to your preferred region. You can also omit this flag to get an interactive prompt to select a region. Update the --region flag to your preferred region. You can also omit this flag to get an interactive prompt to select a region.
terminal
gcloud run deploy my-bun-app --source . --region=us-west1 --allow-unauthenticated

Deploying from source requires an Artifact Registry Docker repository to store built containers. A repository named
[cloud-run-source-deploy] in region [us-west1] will be created.

Do you want to continue (Y/n)? Y

Building using Dockerfile and deploying container to Cloud Run service [my-bun-app] in project [my-bun-app-...] region [us-west1]
✓ Building and deploying... Done.
  ✓ Validating Service...
  ✓ Uploading sources...
  ✓ Building Container... Logs are available at [https://console.cloud.google.com/cloud-build/builds...].
  ✓ Creating Revision...
  ✓ Routing traffic...
  ✓ Setting IAM Policy...
Done.
Service [my-bun-app] revision [my-bun-app-...] has been deployed and is serving 100 percent of traffic.
Service URL: https://my-bun-app-....us-west1.run.app
7

Visit your live application

🎉 Your Bun application is now live!Visit the Service URL (https://my-bun-app-....us-west1.run.app) to confirm everything works as expected.