> ## Documentation Index
> Fetch the complete documentation index at: https://docs.bult.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Builds

#### Build Configuration

Configure builds in Canvas UI’s “**Git**” tab:

* **Nixpacks**: Set install (npm install), build (npm run build), and start (npm run start) commands.
* **Dockerfiles**: Specify path (e.g., ./Dockerfile), context (e.g., .), and build stage (e.g., production).

#### Dockerfiles

Example Dockerfile for Node.js:

```
FROM node:18
WORKDIR /app
COPY . .
RUN npm install
CMD ["npm", "run", "start"]
```

Set custom start command in Canvas UI (e.g., npm run start).

#### Nixpacks

Auto-detect build settings for Node.js, Python, etc.