### Configure build and start for Phoenix

Build and start for a Phoenix app on Ample. Verified on Phoenix: the app built and started with the documented commands and answered on its public HTTPS URL. Build and start: `mix deps.get`, `MIX_ENV=prod mix compile` and `mix release` in the builder, then the release bin script with `PHX_SERVER=true` on the elixir-1.18 template; `PORT`, `DATABASE_URL` and `SECRET_KEY_BASE` read in `config/runtime.exs`.

#### Workflow Steps

1. **Build and start**  
   `mix deps.get`, `MIX_ENV=prod mix compile` and `mix release` in the builder, then the release bin script with `PHX_SERVER=true` on the elixir-1.18 template; `PORT`, `DATABASE_URL` and `SECRET_KEY_BASE` read in `config/runtime.exs`; the server must bind `0.0.0.0` on `PORT`.

2. **Deploy**  
   Run the synchronous deploy once and read the result.  
   Command: `ample deploy . --name <your-app-name> --public`

3. **Verify**  
   Fetch the live URL on the example; on failure read the build and runtime logs.  
   Command: `ample logs <your-app-name> --kind build`

#### Prerequisites

- A Phoenix project (`mix deps.get`, `MIX_ENV=prod mix compile` and `mix release` in the builder, then the release bin script with `PHX_SERVER=true` on the elixir-1.18 template; `PORT`, `DATABASE_URL` and `SECRET_KEY_BASE` read in `config/runtime.exs`)
- An Ample account token with `servers:write`.

#### Success Checks

- App responds on its public URL via HTTP GET at `/`, expecting response from `ample canary phoenix patterns`.

#### Limitations

- Verified on the elixir-1.18 template at `s-1vcpu-1gb`; other sizes and Phoenix major versions are not verified.
- Region, compliance attestations and request-duration limits are unknown and not claimed.

#### Cost Estimate

- **Currency:** USD  
- **Monthly Amount:** 5.0  
- **Basis:** Size prices from pricing.toml (loaded by the API) at build revision `1ac5595375130d45290090e82ed0f554ccd45405-dirty`  
- **Components:**  
   - App Server (Size: `s-1vcpu-1gb`, Quantity: 1.0, Monthly Amount: 5.0)  
- Note: Always-on monthly price of the tested sizes; apps auto-pause when idle.

#### Examples

- **Phoenix pattern fixture**  
   Verified build and start on Phoenix.
   Source Reference: `tests/deploy-canaries/phoenix-patterns`.

#### Evidence Summary

- **Canary Run Summary:**  
   Phoenix pattern fixture deployed on Ample with documented build and start commands, responding on its public HTTPS URL.