node-docker

docker-compose.yml

redis:
  image: redis
  container_name: cache_service
  expose:
    - 6379
app:
  build: ./
  volumes:
    - ./:/var/www/app
    - .env.docker:/var/www/app/.env
  environment:
    - REDIS_URL=redis://jobkred_mailer_cache
  links:
    - redis
  ports:
    - 4000:4000

Dockerfile

FROM node:12

# Create app directory
WORKDIR /usr/src/app

# Install app dependencies
# A wildcard is used to ensure both package.json AND package-lock.json are copied
# where available (npm@5+)
COPY package*.json ./

RUN npm install
RUN npm install pm2 -g

# If you are building your code for production
RUN npm ci --only=production

# Bundle app source
COPY . .

EXPOSE 4000
CMD ["pm2-runtime", "start", "index.js"]