build docker image for react application

Dockerfile

FROM node:14-alpine3.10 AS builder
WORKDIR /usr/src/app

ARG API_ENDPOINT=http://localhost:3333/api
ENV REACT_APP_API_ENDPOINT=$API_ENDPOINT

COPY package*.json ./

RUN npm ci
COPY . .
RUN npm run build

FROM nginx:1.20-alpine

COPY nginx.conf /etc/nginx/conf.d/default.conf
COPY --from=builder /usr/src/app/build /usr/share/nginx/html

EXPOSE 80

# Launch NGINX
CMD [ "nginx", "-g", "daemon off;" ]