Node-Nestjs multiphased dockerfile

Dockerfile

FROM node:lts-alpine3.12 AS build
WORKDIR /usr/src/app
COPY package*.json ./
RUN npm install
COPY . .
RUN npm run build

FROM node:lts-alpine3.12 AS runtime
ARG NODE_ENV=production
ENV NODE_ENV=${NODE_ENV}
WORKDIR /usr/src/app
COPY package*.json ./
RUN npm ci --only=production
COPY --from=build /usr/src/app/dist/* ./
CMD [ "node", "main" ]