Dockerfile - Multi step build process for node.js

Dockerfile

# One single Dockerfile with a multi step build process
# 1. build all native extensions, dependencies, etc.
# 2. copy resulting files into a clean container

FROM node:10-alpine as builder
# Add core packages to allow building native extensions
RUN apk add --no-cache make gcc g++ python
RUN npm install -g yarn
WORKDIR /src
COPY package.json yarn.lock /src/
RUN yarn install --production
COPY . /src



FROM node:10-alpine
RUN npm install -g pm2
WORKDIR /app
COPY --from=builder /src/ /app/
USER node
EXPOSE 3000
CMD [ "pm2-docker", "--json", "--instances", "0", "server/server.js" ]