Dockerfile for serving static assets from a CRA-generated application build

Dockerfile

# Stage 1 - prepare application dependencies and bundle it
FROM node:dubnium as build-assets
WORKDIR /usr/src/app
COPY package.json package-lock.json ./
RUN npm ci
COPY . ./
RUN npm run build

# Stage 2 - serve only build assets through a static server
FROM node:dubnium
RUN npm i --global serve
COPY --from=build-assets /usr/src/app/build /usr/src/app/build
EXPOSE 5000
CMD ["serve", "-s", "/usr/src/app/build"]