Ye perfect dockerfile for node.js app

Dockerfile

FROM node:alpine

RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app

# A wildcard is used to ensure both package.json AND package-lock.json are copied
COPY package*.json ./
RUN npm install --quiet # quiet flag to reduce logged information

# copy node modules to be able to mount source code and keep node_modules maintained by container to avoid rebuild on source code updates
RUN mkdir -p /dist/node_modules
RUN cp -r node_modules/* /dist/node_modules/
ENV NODE_PATH /dist/node_modules

# default host variable for nginx-proxy and node
ENV API_ROOT_CLIENT=

# copy project directory to WORKDIR
COPY . ./

EXPOSE 7778 3051

# run as node user instead of root for security reasons
USER node

CMD [ "npm", "run", "dev" ]

# docker run -p 7778:7778 -p 3051:3051 --rm -t -i -v $PWD:/usr/src/app