# Deliver public assets through CDN for Symfony

## Summary

Cdn assets for a Symfony app on Ample. Verified on Symfony: a versioned, immutable-cached asset uploaded to a published bucket and served from the CDN URL. Build and start: `composer install --no-dev` from composer.lock with Symfony Runtime's dotenv disabled (extra.runtime.disable_dotenv; .env never ships, its values arrive as encrypted env, and compile-time parameters such as DEFAULT_URI need a default), then FrankenPHP serving `public/` (php-server with the `index.php` fallback) reading `PORT` on the `php-8.5` template with `APP_ENV=prod`.

## Infrastructure requirements

- [Compute](#): verified (Apps run in isolated x86_64 Firecracker microVMs that auto-pause when idle and wake on request; sizes are the priced VM sizes.)
- [CDN](#): verified (The CDN host serves objects from published buckets. It does not front app compute and is not a cache or key-value store.)

## Prerequisites

- A Symfony project (`composer install --no-dev` from composer.lock with Symfony Runtime's dotenv disabled (extra.runtime.disable_dotenv; .env never ships, its values arrive as encrypted env, and compile-time parameters such as DEFAULT_URI need a default), then FrankenPHP serving `public/` (php-server with the `index.php` fallback) reading `PORT` on the `php-8.5` template with `APP_ENV=prod`)
- A bucket from `ample bucket create` with credentials passed as encrypted `S3_*` environment variables
- An Ample account token with `servers:write`, `buckets:read`

## Exact tested configuration

- template: `php-8.5`
- runtime: `php`
- size: `s-1vcpu-1gb`
- install: `composer install --no-dev --prefer-dist --no-interaction --no-progress --optimize-autoloader`
- start: `frankenphp php-server --listen :$PORT --root public`

## Steps

1. **Build and start.** `composer install --no-dev` from composer.lock with Symfony Runtime's dotenv disabled (extra.runtime.disable_dotenv; .env never ships, its values arrive as encrypted env, and compile-time parameters such as DEFAULT_URI need a default), then FrankenPHP serving `public/` (php-server with the `index.php` fallback) reading `PORT` on the `php-8.5` template with `APP_ENV=prod`; the server must bind `0.0.0.0` on `PORT`.
2. **Publish a bucket for public assets.** Publish only the asset bucket; upload versioned keys with an immutable Cache-Control header and build URLs from its public URL.

```
   ample bucket publish <bucket-name>
   ```
3. **Verify.** Fetch the live URL and `/p/versioned-static-assets` on the example; on failure read the build and runtime logs.

```
   ample logs <deployment_id> --kind build
   ```

## Tested examples

- **Symfony pattern fixture** (tests/deploy-canaries/symfony-patterns): Verified CDN assets on Symfony.

## Success checks

- App responds on its public URL (`/` on the live URL, expect ample canary Symfony patterns)
- Versioned-static-assets check from the example (`/p/versioned-static-assets` on the live URL, expect see the pattern fixture checks)

## Limitations

- Verified on the `php-8.5` template at `s-1vcpu-1gb`; other sizes and Symfony major versions are not verified.
- Region, compliance attestations and request-duration limits are unknown and not claimed.
- The CDN serves published-bucket objects only; cache rules, purge and TTL control are not verified.

## Cost estimate

Estimated 5.00 USD per month (size prices from pricing.toml at build revision a1b8c38919e59cd035ebabaced73cf84ece24371).
- app server x1 `s-1vcpu-1gb`: 5.00 USD

Always-on monthly price of the tested sizes; apps auto-pause when idle. Buckets are allocation-priced per quota and not included.

## Verification evidence

- canary_run on 2026-09-20T22:23:52Z at revision `64a7bb8e37dd-dirty (CLI 64a7bb8)`: Symfony pattern fixture deployed on Ample (composer install --no-dev from composer.lock with Symfony Runtime's dotenv disabled (extra.runtime.disable_dotenv; .env never ships, its values arrive as encrypted env, and compile-time parameters such as DEFAULT_URI need a default), then FrankenPHP serving public/ (php-server with the index.php fallback) reading PORT on the php-8.5 template with APP_ENV=prod); for this guide: a versioned, immutable-cached asset uploaded to a published bucket and served from the CDN URL. (expires 2027-03-19T22:23:52Z)

Last verified: 2026-09-20T22:23:52Z

## Execution binding

MCP tool `ample_deploy` (registry `mcp:ample_deploy`), schema hash `876465fce906da0c` observed 2026-09-21T03:19:59.461917+00:00 at revision `49962bcade4f`, binding state `current`, required scopes: `servers:write`, `buckets:read`.