Astro

This guide walks you through building and deploying an Astro application to Magic Containers with GitHub Container Registry. You’ll need:

A GitHub account for source code and container registry

Don’t have a bunny.net account yet? Sign up and enable Magic Containers to get started.

Create the Astro app

Create a new Astro project:

npm create astro@latest app-astro
cd app-astro

Add the Node adapter

Astro requires an adapter for server-side rendering. Install the Node adapter:

npx astro add node

This updates your astro.config.mjs to include the adapter:

astro.config.mjs

import { defineConfig } from "astro/config";
import node from "@astrojs/node";

export default defineConfig({
  output: "server",
  adapter: node({
    mode: "standalone",
  }),
});

Create an API route

Create a simple endpoint to test the deployment:

src/pages/index.json.ts

import type { APIRoute } from "astro";

export const GET: APIRoute = () => {
  return new Response(JSON.stringify({ message: "Hello from Bunny 🐰" }));
};

Run locally

Start the development server:

npm run dev

Visit http://localhost:4321 in your browser, or test the API route:

curl http://localhost:4321/index.json

Create the Dockerfile

Dockerfile

FROM node:22-alpine AS base
WORKDIR /app
COPY package*.json ./

FROM base AS deps
RUN npm install

FROM deps AS build
COPY . .
RUN npm run build

FROM base AS runtime
COPY package*.json ./
RUN npm install --omit=dev
COPY --from=build /app/dist ./dist

ENV HOST=0.0.0.0
ENV PORT=80
EXPOSE 80

CMD ["node", "./dist/server/entry.mjs"]

Build and push to GitHub Container Registry

GitHub Actions
Docker CLI

Create .github/workflows/build.yml to automatically build and push on every commit to main:

.github/workflows/build.yml

name: Build and Push

on:
  push:
    branches: [main]

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

    steps:
      - uses: actions/checkout@v4

      - name: Log in to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ github.sha }}

      - name: Update container image on Magic Containers
        uses: BunnyWay/actions/container-update-image@main
        with:
          app_id: ${{ vars.APP_ID }}
          api_key: ${{ secrets.BUNNYNET_API_KEY }}
          container: app
          image_tag: "${{ github.sha }}"

Push your code to trigger the workflow:

git init
git add .
git commit -m "Initial commit"
git remote add origin https://github.com/YOUR_USERNAME/app-astro.git
git push -u origin main

Build and push manually from your local machine.

Create a Personal Access Token

Go to GitHub Settings > Developer settings > Personal access tokens and create a token with write:packages scope.

export CR_PAT=your_personal_access_token
echo $CR_PAT | docker login ghcr.io -u YOUR_USERNAME --password-stdin

Build the image

docker build --platform linux/amd64 -t ghcr.io/YOUR_USERNAME/app-astro:latest .

Magic Containers only supports images built for the linux/amd64 architecture. The --platform flag ensures compatibility regardless of your local machine’s architecture.

Push to registry

docker push ghcr.io/YOUR_USERNAME/app-astro:latest

If your package is private, set the visibility to Public in GitHub or configure Magic Containers with registry credentials.

Deploy to Magic Containers

Create a new app

In the bunny.net dashboard, go to Magic Containers and click Add App. Enter a name and select your deployment option.

Add a container

Click Add Container, then configure:

Field	Value
Registry	GitHub Container Registry
Image	`YOUR_USERNAME/{imageName}`
Tag	`latest` for Docker CLI, or the commit SHA from your GitHub Actions workflow

Add an endpoint

Go to the Endpoints tab, click Add New Endpoint, and set the container port to 80.

Deploy

Click Add Container, then Next Step, and Confirm and Create.

For more details, see the quickstart guide.

Test your app

Visit your container URL in the browser to see your Astro site, or test the API route:

curl https://mc-xxx.bunny.run/index.json

Response

{ "message": "Hello from Bunny 🐰" }

You can add a custom hostname from the Endpoints section in your app settings.

Add Optimizer

Your CDN endpoint is already a pull zone in front of the app. Turn on Bunny Optimizer there, and a custom image service sends every <Image> width to the edge for resizing.

Configure the endpoint's pull zone

Open the pull zone that serves your CDN endpoint under CDN → Pull Zones. Turn on URL Query String vary, since endpoint pull zones ignore query strings by default and ?width=1080 would come back as the cached ?width=640 image.Enable Optimizer, then turn on the Dynamic Image API and automatic WebP under Optimizer → Settings. Astro already minifies CSS and JavaScript, so turn Optimizer’s minification off.

Add the image service

The service spreads Astro’s baseService, so Astro still works out the srcset widths, and only getURL changes. Without a baseURL, it returns relative URLs that go through the same pull zone.

src/bunny-image-service.ts

import type { ExternalImageService } from "astro";
import { baseService } from "astro/assets";

const service: ExternalImageService<{ baseURL?: string }> = {
  ...baseService,
  getURL(options, imageConfig) {
    const base = imageConfig.service.config?.baseURL;
    const src = typeof options.src === "string" ? options.src : options.src.src;

    const absolute = /^(https?:)?\/\//.test(src);
    if (absolute && !(base && src.startsWith(base))) return src;

    const url = new URL(src, base || "http://localhost");
    if (options.width) url.searchParams.set("width", String(options.width));
    url.searchParams.set("quality", String(options.quality ?? 75));
    return base || absolute ? url.href : url.pathname + url.search;
  },
};

export default service;

Point Astro at the service

astro.config.mjs

import { defineConfig } from "astro/config";
import node from "@astrojs/node";

export default defineConfig({
  output: "server",
  adapter: node({ mode: "standalone" }),
  image: { service: { entrypoint: "./src/bunny-image-service.ts" } },
});

Rebuild and push the image. Smart Cache is on for endpoint pull zones, so the edge skips HTML and deploys need no purge.

To put a pull zone in front of Astro on another host, see Serve Astro from Bunny CDN.

Connect a database

You can connect your app to Bunny Database directly from the dashboard:

Go to Database > [Your Database] > Access
Click Generate Tokens
Click Add Secrets to Magic Container App
Select your app

The BUNNY_DATABASE_URL and BUNNY_DATABASE_AUTH_TOKEN environment variables are now available in your app:

src/pages/api/users.ts

import type { APIRoute } from "astro";
import { createClient } from "@libsql/client/web";

const client = createClient({
  url: import.meta.env.BUNNY_DATABASE_URL,
  authToken: import.meta.env.BUNNY_DATABASE_AUTH_TOKEN,
});

export const GET: APIRoute = async () => {
  const result = await client.execute("SELECT * FROM users");

  return new Response(JSON.stringify(result.rows), {
    status: 200,
    headers: {
      "Content-Type": "application/json",
    },
  });
};

See the TypeScript SDK documentation for more details.

Documentation

Deployment

Managing Apps

Observability

Platform

Reference

Guides

Create the Astro app

Add the Node adapter

Create an API route

Run locally

Create the Dockerfile

Build and push to GitHub Container Registry

Deploy to Magic Containers

Test your app

Add Optimizer

Connect a database

Next steps

​Create the Astro app

​Add the Node adapter

​Create an API route

​Run locally

​Create the Dockerfile

​Build and push to GitHub Container Registry

​Deploy to Magic Containers

​Test your app

​Add Optimizer

​Connect a database

​Next steps

Create the Astro app

Add the Node adapter

Create an API route

Run locally

Create the Dockerfile

Build and push to GitHub Container Registry

Deploy to Magic Containers

Test your app

Add Optimizer

Connect a database

Next steps