render.yaml

# ── Render Blueprint (free tier — no persistent disk) ─────────────────────────
#
# Defines the BACKEND only. The frontend is actually deployed on Vercel
# (https://chain-forge-blockchain-by-shaurya.vercel.app), not Render — see
# frontend/vercel.json for its equivalent /api/* rewrite + SPA fallback rules.
# The commented-out service below is kept as a reference for anyone who'd
# rather host the frontend on Render instead; it's not part of the live setup.
#
# NO PERSISTENT DISK: Render's free tier doesn't support attaching one (disks
# require a paid plan, e.g. Starter at $7/mo + ~$0.25/GB/mo). Without it,
# blockchain_<NODE_ID>.db and wallet_<NODE_ID>.dat live in the container's
# ephemeral filesystem — they reset on every redeploy, and free services also
# spin down after ~15 min of inactivity and start fresh on the next request.
# Fine for a demo/portfolio deployment; not fine if you need the chain to
# accumulate real history over time. To upgrade later: bump `plan` to
# `starter` on the backend service, add a `disk:` block (mountPath e.g.
# /var/data), and set a GO_ROOT env var to that same path — goRunner.js,
# routes/blockchain.js, and routes/system.js all already check for it.
#
# IMPORTANT — things I could not verify from here (no Render account access):
#   - Exact current Render Blueprint schema (field names occasionally change
#     between Render API versions). Validate this in the Render dashboard's
#     "New Blueprint" flow before relying on it — it will flag schema errors.
#   - MONGO_URI must be set manually in the Render dashboard (sync: false
#     means Render will prompt for it rather than reading it from this file,
#     so the real Atlas credentials never need to be committed anywhere).
# ─────────────────────────────────────────────────────────────────────────────

services:
  - type: web
    name: chainforge-backend
    runtime: docker
    dockerfilePath: ./Dockerfile.render
    dockerContext: .
    plan: free
    envVars:
      - key: NODE_ID
        value: "3000"
      - key: MONGO_URI
        sync: false
      - key: ALLOWED_ORIGINS
        value: https://chain-forge-blockchain-by-shaurya.vercel.app

# ── Not in use — frontend is hosted on Vercel instead (see top comment) ──────
# Reference only, for anyone who'd rather use a Render static site:
#
#  - type: web
#    name: chainforge-frontend
#    runtime: static
#    buildCommand: cd frontend && npm install && npm run build
#    staticPublishPath: frontend/dist
#    routes:
#      - type: rewrite
#        source: /api/*
#        destination: https://chainforge-backend.onrender.com/api/*
#      - type: rewrite
#        source: /*
#        destination: /index.html