Build Packs

Ink supports four build packs that determine how your application is built and deployed.

Auto-detect (default)

The default build pack automatically detects your language and framework. It supports:

• Node.js, Python, Go, Ruby, Java, PHP, Rust, Elixir, and more
• Framework detection for Next.js, Django, FastAPI, Rails, Spring Boot, etc.
• Automatic dependency installation and build steps

No configuration needed — Ink figures it out from your code.

Dockerfile

Use your own Dockerfile for full control over the build process:

• Supports custom dockerfile_path for non-standard locations
• Auto-detects EXPOSE directives for port configuration
• Full control over base images, build steps, and runtime

Static

The most resource-efficient deployment type. Serves pre-built files through nginx with minimal memory and CPU usage — ideal for sites that don't need a server runtime.

• HTML, CSS, JavaScript
• Built single-page apps (when combined with publish_directory) — React (Vite), Vue, Svelte, Angular, or any framework that outputs static files
• Served via nginx on port 8080