Dockerfile for node.js + typescript + yarn with layer caching

Dockerfile

FROM node:14.15-alpine as base

WORKDIR /home/app
COPY package.json yarn.lock ./

# ---prepare dependencies---
FROM base as dependencies
# install production dependencies
RUN yarn install --production --frozen-lockfile
RUN mv node_modules prod_node_modules
# install all dependencies because they are required for compiling
RUN yarn install --frozen-lockfile

# ---build app---
# linting and tests can go there
FROM dependencies as build
COPY . .
# compile script can be a call to `tsc`
RUN NODE_ENV=production yarn compile

# ---prepare production-ready image---
FROM base as release
COPY --from=dependencies /home/app/prod_node_modules ./node_modules
COPY --from=build /home/app/dist ./dist
ENV NODE_ENV production
USER node
CMD ["node", "dist/server.js"]