Rust Example

This example uses no built-in Rust template. The orchestrator uses a repo-owned docker-compose.preview.yml (or docker-compose.preview.yaml) in the repository root and injects host ports for the app and db.

Repository

Repo: rust-project-preview-example — replace with your repo URL when published.

Stack

Framework: Rust (Axum or similar)
Database: PostgreSQL (migrations on startup)
Cache: Redis
Config: .env (DATABASE_URL, REDIS_URL)
Health: GET /health, GET /ready (DB + Redis), GET /ping, GET /stats
Migrations and seeder: Run on app startup

Key files

`docker-compose.preview.yml` (repository root) — required

For Rust there is no built-in template, so you must provide a preview compose file. Use service names app and db; do not set host ports—the orchestrator injects them. Example structure (adjust build and env to match your repo):

services:
  app:
    build: .
    ports: []   # Orchestrator injects host port
    environment:
      - DATABASE_URL=postgres://preview:preview@db:5432/pr_${PR_NUMBER}
      - REDIS_URL=redis://redis:6379/
    depends_on:
      - db
      - redis
  db:
    image: postgres:16-alpine
    environment:
      POSTGRES_USER: preview
      POSTGRES_PASSWORD: preview
      POSTGRES_DB: pr_${PR_NUMBER}
  redis:
    image: redis:7-alpine

The orchestrator writes docker-compose.preview.generated.yml with injected ports and runs docker compose against it.

`preview-config.yml` (repository root) — required

You must add preview-config.yml with all required fields. Set framework: rust so the orchestrator knows the app port and entrypoint; when you provide docker-compose.preview.yml, the orchestrator still uses it for compose and uses preview-config.yml for validation, health check path, and optional build/startup commands.

framework: rust
database: postgres
health_check_path: /health
app_port: 8080
app_port_env: PORT
app_entrypoint: ./app
# Or ./target/release/app for release builds
# Optional:
# build_commands:
#   - cp .env.example .env
# env:
#   - RUST_LOG=info

Local run and API

See the repo README for:

cp .env.example .env, set DATABASE_URL and REDIS_URL
createdb preview_example, cargo run
App listens on http://0.0.0.0:8080

Endpoints: /health, /ready, /ping, /stats. Port and routing are handled by the orchestrator when using the injected compose.

​Repository

​Stack

​Key files

​docker-compose.preview.yml (repository root) — required

​preview-config.yml (repository root) — required

​Local run and API