admiralgallade/harness-repository/docker-patterns

FROM node:18-alpine AS build
WORKDIR /app
COPY package*.json ./
RUN npm install
 
FROM node:18-alpine
WORKDIR /app
COPY --from=build /app/node_modules ./node_modules
COPY . .
CMD ["node", "server.js"]

# キャッシュを活用するため、変更がない部分を上に
FROM node:18-alpine
WORKDIR /app
 
# 依存関係（変更が少ない）
COPY package*.json ./
RUN npm install
 
# アプリケーション（頻繁に変更）
COPY . .
 
CMD ["node", "server.js"]

HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD node healthcheck.js

version: '3.8'
services:
  app:
    build: .
    ports:
      - "3000:3000"
    environment:
      - NODE_ENV=production
    volumes:
      - ./data:/app/data
    depends_on:
      - db
  db:
    image: postgres:15
    environment:
      - POSTGRES_PASSWORD=secret