docker/prod/Dockerfile
FROM node:16-alpine as build_step
WORKDIR /app
COPY package.json yarn.lock ./
RUN yarn install --ignore-engines
COPY . /app
RUN yarn build
FROM node:16-alpine
WORKDIR /app
RUN npm install -g serve
COPY --from=build_step /app/build .
CMD ["serve", "-s", "-l", "3000"]