rembUse the official Bun image to run the application
FROM oven/bun:debian
Set the work directory to /app
WORKDIR /app
Copy the package.json and bun.lock into the container
COPY package.json bun.lock ./
Install the dependencies
RUN bun install --production --frozen-lockfile
Copy the rest of the application into the container
COPY . .
Expose the port (DigitalOcean will set PORT env var)
EXPOSE 8080
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.
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
3
Authenticate Docker with DigitalOcean registry
Before building and pushing the Docker image, authenticate Docker with the DigitalOcean Container Registry:
terminal
doctl registry login
Successfully authenticated with registry.digitalocean.com
This command authenticates Docker with DigitalOcean’s registry using your DigitalOcean credentials. Without this step, the build and push command will fail with a 401 authentication error.
4
Build and push the Docker image to the DigitalOcean registry
Make sure you’re in the directory containing your `Dockerfile`, then build and push the Docker image to the DigitalOcean registry in one command:
terminal
docker buildx build --platform=linux/amd64 -t registry.digitalocean.com/bun-digitalocean-demo/bun-digitalocean-demo:latest --push .
If you’re building on an ARM Mac (M1/M2), you must use `docker buildx` with `--platform=linux/amd64` to ensure compatibility with DigitalOcean’s infrastructure. Using `docker build` without the platform flag will create an ARM64 image that won’t run on DigitalOcean.
Once the image is pushed, you should see it in the [**DigitalOcean registry dashboard**](https://cloud.digitalocean.com/registry):
5
Create a new DigitalOcean App Platform project
In the DigitalOcean dashboard, go to [**App Platform**](https://cloud.digitalocean.com/apps) > **Create App**. We can create a project directly from the container image.
Make sure the details are correct, then click **Next**.
Review and configure resource settings, then click **Create app**.
6
Visit your live application
🥳 Your app is now live! Once the app is created, you should see it in the App Platform dashboard with the public URL.
