docker-compose.yml

api:
  container_name: nodejs
  build: ./server
  working_dir: /usr/src/api
  volumes:
    - ./server:/usr/src/api
  env_file:
    - ./server/.env
  links:
    - mongodb
  ports:
    - "3000:3000"
  command: yarn && gulp babel && yarn run start
mongodb:
  container_name: mongodb
  image: mongo

Dockerfile

FROM node:7.6.0

RUN mkdir -p /usr/src/app && \
  apt-get update && apt-get install -y curl apt-transport-https && \
  curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - && \
  echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list && \
  apt-get update && apt-get install yarn && npm install -g gulp-cli

WORKDIR /usr/src/app

RUN yarn;gulp babel

EXPOSE 3000