docker-compose.yml

version: "3.9"

# ─────────────────────────────────────────────────────────────────────────────
# ChainForge — Full Stack
#
#   docker compose up --build
#
# Services:
#   go-builder  — compiles the Go binary into a shared volume (init pattern)
#   backend     — Express API on :5000, calls chainforge.exe binary via execSync
#   frontend    — Vite/React app on :5173
#   landing     — Next.js landing page on :3001
#
# Ports exposed to your host:
#   http://localhost:3001  →  Landing page (Next.js)
#   http://localhost:5173  →  Frontend app (Vite/React)
#   http://localhost:5000  →  Backend API (Express)
#
# Volume layout:
#   go-bin      → Go binary shared between go-builder and backend
#                 mounted at /go-bin in both containers
#   chain-data  → Persistent BoltDB chain + wallet .dat files
#                 mounted at /go-root in the backend (= GO_ROOT env var, set in
#                 Dockerfile.backend). Backend code lives at /app/backend —
#                 deliberately NOT under /go-root, since mounting a non-empty
#                 named volume replaces everything at that path rather than
#                 merging with the image, which would otherwise hide backend
#                 code changes behind whatever was first put in the volume.
# ─────────────────────────────────────────────────────────────────────────────

services:

  # ── Compile Go binary into shared volume ───────────────────────────────────
  go-builder:
    build:
      context: .
      dockerfile: Dockerfile.go
    volumes:
      - go-bin:/go-bin
    # Copy the compiled binary into the shared volume and exit
    entrypoint: ["sh", "-c", "cp /app/chainforge /go-bin/chainforge && chmod +x /go-bin/chainforge && echo '✅ Go binary ready'"]

  # ── Express REST API ────────────────────────────────────────────────────────
  backend:
    build:
      context: .
      dockerfile: Dockerfile.backend
    ports:
      - "5000:5000"
    environment:
      PORT: 5000
      NODE_ID: 3000
      MONGO_URI: ${MONGO_URI:-}
    volumes:
      # Shared Go binary — mounted at /go-bin so the CMD can copy
      # it to /usr/local/bin/chainforge.exe for server.js to call
      - go-bin:/go-bin
      # Persist blockchain .db and wallet .dat files at GO_ROOT (env var,
      # see Dockerfile.backend). Backend code lives at /app/backend instead,
      # specifically so this mount never overlaps with — and therefore never
      # shadows — the application code.
      - chain-data:/go-root
    depends_on:
      go-builder:
        condition: service_completed_successfully
    restart: unless-stopped

  # ── React Frontend (production build, served by nginx) ────────────────────────
  frontend:
    build:
      context: .
      dockerfile: Dockerfile.frontend
    ports:
      - "5173:80"
    depends_on:
      - backend
    restart: unless-stopped

  # ── Next.js Landing Page ────────────────────────────────────────────────────
  landing:
    build:
      context: .
      dockerfile: Dockerfile.landing
    ports:
      # Map host 3001 → container 3000 to avoid clash with Go's NODE_ID=3000 port
      - "3001:3000"
    depends_on:
      - frontend
      - backend
    restart: unless-stopped

# ── Named Volumes ───────────────────────────────────────────────────────────
volumes:
  go-bin:      # Shared Go binary between go-builder and backend
  chain-data:  # Persistent BoltDB chain + wallet files (mounted at /go-root)