Dockerfile

# Base
FROM node:8.11.3-alpine AS base
WORKDIR /usr/src/app
COPY ["package.json", "package-lock.json*", "npm-shrinkwrap.json*", "./"]

# Dependencies
FROM base AS dependencies
RUN npm install --production --silent
RUN cp -R node_modules prod_node_modules
RUN npm install --silent

# Build
FROM dependencies AS base
COPY . .
RUN ./build.js

# Release
FROM build AS release
COPY --from=dependencies /root/chat/prod_node_modules ./node_modules
COPY . .
ENV NODE_ENV production