Node 18 Optimized Docker

docker-compose.yml

services:

  app:
    build:
      context: .
      target: development
    command: npm run start:dev
    volumes:
      - .:/usr/src/app
      - /usr/src/app/node_modules
    environment:
      NODE_ENV: "${NODE_ENV:-development}"
      DATABASE_DSN: "${DATABASE_DSN:-postgres://postgres@postgres:5432/app}"
    ports:
      - '3000'

  postgres:
    image: postgres
    environment:
      POSTGRES_HOST_AUTH_METHOD: trust
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: postgres
      POSTGRES_DB: app
    volumes:
      - postgres-data:/var/lib/postgresql/data
    ports:
      - '5432'
    healthcheck:
      test: ["CMD-SHELL", "pg_isready"]
      interval: 10s
      timeout: 5s
      retries: 5

volumes:
  postgres-data:

Dockerfile

FROM node:18 AS development

RUN apt-get update && apt-get install -y openssl

WORKDIR /usr/src/app

COPY --chown=node:node package.json package-lock.json ./

RUN npm ci

COPY --chown=node:node . .

RUN npm run build --if-present

USER node

CMD [ "npm", "start" ]

FROM node:18-alpine AS build

WORKDIR /usr/src/app

COPY --chown=node:node package*.json ./
COPY --chown=node:node --from=development /usr/src/app/node_modules ./node_modules
COPY --chown=node:node . .

RUN npm run build --if-present

ENV NODE_ENV production

# Running `npm ci` removes the existing node_modules directory.
# Passing in --only=production ensures only production dependencies are
# installed, optimizing node_modules for production environments.
RUN npm ci --only=production && npm cache clean --force

USER node

FROM node:18-alpine AS production

COPY --chown=node:node --from=build /usr/src/app/node_modules ./node_modules
COPY --chown=node:node --from=build /usr/src/app/dist ./dist

CMD [ "node", "dist/main.js" ]