Dockerfile
FROM node:13-alpine
# 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 ./
ENV NODE_ENV production
RUN npm install
# Bundle app source
COPY . .
EXPOSE 9002
CMD [ "./bin/start-sandbox" ]