Feature: docker support

[Bound3R]

This PR adds full Docker support to open-nof1.ai for easier local setup and development.

Changes

• Added .dockerignore
• Added Dockerfile for the main Next.js app
• Added Dockerfile.cron for cron worker
• Updated docker-compose.yml with services:
  • db (PostgreSQL 16)
  • app (Next.js + Bun)
  • cron (scheduled jobs)
• Updated crontab for cron container
• Updated README.md with Docker usage instructions

Motivation

Running the stack locally with Bun and Postgres required multiple manual steps.
With Docker Compose, the entire environment (app, DB, and cron) can be started with one command.

How to test

1. Create a .env file with required variables.
2. Run:

   docker compose up --build -d

3. Access the app at http://localhost:3000.
4. (Optional) Start only the cron worker:

   docker compose up -d cron

[Bound3R]

⚠️ I found a small bug in the cron endpoint:
POST /api/cron/20-seconds-metrics-interval returns 405 in about 1064ms.
The route only accepts GET requests, as defined in the handler:

export const GET = async (request: NextRequest) => { ... }

It can likely be fixed by adjusting the cron job to use GET instead of POST.

The README might also need to be updated to reflect this.

[Bound3R]

⚠️ I found a small bug in the cron endpoint: POST /api/cron/20-seconds-metrics-interval returns 405 in about 1064ms. The route only accepts GET requests, as defined in the handler:

export const GET = async (request: NextRequest) => { ... }

It can likely be fixed by adjusting the cron job to use GET instead of POST.

The README might also need to be updated to reflect this.

Fixed in the Docker cron setup, but I think we should update the README as well.