`npm i && docker-compose up` で mongodb + node on docker-compose on alpine 😎

docker-compose.yml

db:
  image: mvertes/alpine-mongo:3.2.4-1
  volumes:
    - /data/db
  ports:
    - '27017:27017'

web:
  build: .
  command: node_modules/.bin/nodemon app.js
  environment:
    NODE_ENV: 'development'
  ports:
    - '3000:3000'
  volumes:
    - .:/home/i/starter-app
    - ./node_modules:/home/i/starter-app/node_modules
  links:
    - db:dockerized_mongo

Dockerfile

FROM mhart/alpine-node:7.7.4

ENV HOME=/home/i
ENV APP=starter-app

RUN adduser -D -s /bin/false i

COPY package.json $HOME/$APP/
RUN chown -R i:i $HOME/*

USER i
WORKDIR $HOME/$APP
RUN npm install

USER root
COPY . $HOME/$APP
RUN chown -R i:i $HOME/*
USER i

CMD ["node", "app.js"]