docker-compose.yml

version: '3'
services:
  app:
    container_name: downwrite-api
    restart: always
    build: .
    environment:
      - PORT=4888
      - MONGO_URL=mongo:27017
    ports:
      - '4888:4888'
    links:
      - mongo
  mongo:
    container_name: downwrite-db
    image: mongo:latest
    ports:
      - '27017:27017'

Dockerfile

FROM mhart/alpine-node:10

WORKDIR /usr/src/app

COPY package.json ./

# # add files to container
# ADD . /app

# # specify the working directory
# WORKDIR /app

# RUN chmod -R 777 .


COPY . .

# build process
RUN apk --no-cache --virtual build-dependencies add \
  python \
  make \
  g++
RUN npm install node-pre-gyp -g
RUN npm install
RUN npm run build
RUN npm prune --production


EXPOSE 4000

# run application
CMD ["npm", "start"]