trenes/backend/Dockerfile

# Multi-stage Dockerfile para Backend (API + Worker)
FROM node:20-alpine AS base

# Instalar dependencias del sistema
RUN apk add --no-cache \
    python3 \
    make \
    g++ \
    curl \
    wget

WORKDIR /app

# Copiar archivos de dependencias
COPY package*.json ./

# Instalar dependencias
RUN npm install --omit=dev && \
    npm cache clean --force

# Copiar código fuente
COPY . .

# ================================
# Stage para API
# ================================
FROM base AS api

ENV NODE_ENV=production
ENV PORT=3000

# Crear usuario no-root
RUN addgroup -g 1001 -S nodejs && \
    adduser -S nodejs -u 1001

USER nodejs

EXPOSE 3000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
    CMD wget --quiet --tries=1 --spider http://localhost:3000/health || exit 1

CMD ["node", "src/api/server.js"]

# ================================
# Stage para Worker
# ================================
FROM base AS worker

ENV NODE_ENV=production

# Crear usuario no-root
RUN addgroup -g 1001 -S nodejs && \
    adduser -S nodejs -u 1001

USER nodejs

# Health check para worker (verifica que el proceso esté corriendo)
HEALTHCHECK --interval=60s --timeout=10s --start-period=40s --retries=3 \
    CMD pgrep -f "node.*worker" || exit 1

CMD ["node", "src/worker/gtfs-poller.js"]

# ================================
# Stage de desarrollo (opcional)
# ================================
FROM node:20-alpine AS development

RUN apk add --no-cache \
    python3 \
    make \
    g++ \
    curl \
    wget

WORKDIR /app

COPY package*.json ./
RUN npm install

COPY . .

ENV NODE_ENV=development

CMD ["npm", "run", "dev"]