Deploy your Astro Site to Deno

You can deploy a server-side rendered Astro site to Deno Deploy, a distributed system that runs JavaScript, TypeScript, and WebAssembly at the edge, worldwide.

This guide includes instructions for deploying to Deno Deploy through Github Actions or Deno Deploy’s CLI.

This guide assumes you already have Deno installed.

Your Astro project can be deployed to Deno Deploy as a server-side rendered site (SSR). Deno Deploy does not support static sites.

To enable SSR in your Astro project and deploy on Deno Deploy:

Add the Deno adapter to enable SSR in your Astro project with the following astro add command. This will install the adapter and make the appropriate changes to your astro.config.mjs file in one step.

npx astro add deno

If you prefer to install the adapter manually instead, complete the following two steps:

1. Install the @astrojs/deno adapter to your project’s dependencies using your preferred package manager. If you’re using npm or aren’t sure, run this in the terminal:

   npm install @astrojs/deno

2. Update your astro.config.mjs project configuration file with the changes below.

   import { defineConfig } from 'astro/config';
   import deno from '@astrojs/deno';
   
   export default defineConfig({
     output: 'server',
     adapter: deno(),
   });

   Next, Update your preview script in package.json with the change below.

   {
     // ...
     "scripts": {
       "dev": "astro dev",
       "start": "astro dev",
       "build": "astro build",
       "preview": "astro preview"
       "preview": "deno run --allow-net --allow-read --allow-env ./dist/server/entry.mjs"
     }
   }

   You can now use this command to preview your production Astro site locally with Deno.

   npm run preview

You can deploy to Deno Deploy through Github Actions or using Deno Deploy’s CLI (command line interface).

If your project is stored on GitHub, the Deno Deploy website will guide you through setting up Github Actions to deploy your Astro site.

1. Push your code to a public or private Github repository.

2. Sign in on Deno Deploy with your Github account, and click on New Project.

3. Select your repository, the branch you want to deploy from, and select Github Action mode. (Your Astro site requires a build step, and cannot use Automatic mode.)

4. In your Astro project, create a new file at .github/workflows/deploy.yml and paste in the YAML below. This is similar to the YAML given by Deno Deploy, with the additional steps needed for your Astro site.

   name: Deploy
   on: [push]
   
   jobs:
     deploy:
       name: Deploy
       runs-on: ubuntu-latest
       permissions:
         id-token: write # Needed for auth with Deno Deploy
         contents: read # Needed to clone the repository
   
       steps:
         - name: Clone repository
           uses: actions/checkout@v3
   
         # Not using npm? Change `npm ci` to `yarn install` or `pnpm i`
         - name: Install dependencies
           run: npm ci
   
         # Not using npm? Change `npm run build` to `yarn build` or `pnpm run build`
         - name: Build Astro
           run: npm run build
   
         - name: Upload to Deno Deploy
           uses: denoland/deployctl@v1
           with:
             project: my-deno-project # TODO: replace with Deno Deploy project name
             entrypoint: server/entry.mjs
             root: dist

5. After committing this YAML file, and pushing to Github on your configured deploy branch, the deploy should begin automatically!

   You can track the progress using the “Actions” tab on your Github repository page, or on Deno Deploy.

1. Install the Deno Deploy CLI.

   deno install --allow-read --allow-write --allow-env --allow-net --allow-run --no-check -r -f https://deno.land/x/deploy/deployctl.ts

2. Run your Astro build step.

   npm run build

3. Run deployctl to deploy!

   In the command below, replace <ACCESS-TOKEN> with your Personal Access Token and <MY-DENO-PROJECT> with your Deno Deploy project name.

   DENO_DEPLOY_TOKEN=<ACCESS-TOKEN> deployctl deploy --project=<MY-DENO-PROJECT> --no-static --include=./dist ./dist/server/entry.mjs

   You can track all your deploys on Deno Deploy.

4. (Optional) To simplify the build and deploy into one command, add a deploy-deno script in package.json.

   {
     // ...
     "scripts": {
       "dev": "astro dev",
       "start": "astro dev",
       "build": "astro build",
       "preview": "deno run --allow-net --allow-read --allow-env ./dist/server/entry.mjs",
       "deno-deploy": "npm run build && deployctl deploy --project=<MY-DENO-PROJECT> --no-static --include=./dist ./dist/server/entry.mjs"
     }
   }

   Then you can use this command to build and deploy your Astro site in one step.

   DENO_DEPLOY_TOKEN=<ACCESS-TOKEN> npm run deno-deploy

📚 Read more about SSR in Astro.