Dockerfile

#get the latest alpine image from node registry
FROM node:16-alpine AS build-stage
RUN npm i -g pnpm
#set the working directory
WORKDIR /app

#copy the package and package lock files
#from local to container work directory /app
COPY package.json /app/
COPY pnpm-lock.yaml /app/

#Run command npm install to install packages
RUN pnpm install

#copy all the folder contents from local to container
COPY . .

#specify env variables at runtime
ARG REACT_APP_ENKETO_URL
ARG REACT_APP_FORM_MANAGER_URL
ARG REACT_APP_HASURA_URL

ENV REACT_APP_ENKETO_URL $REACT_APP_ENKETO_URL
ENV REACT_APP_FORM_MANAGER_URL $REACT_APP_FORM_MANAGER_URL
ENV REACT_APP_HASURA_URL $REACT_APP_HASURA_URL


#create a react production build
RUN npm run build

#get the latest alpine image from nginx registry
FROM nginx:alpine

#we copy the output from first stage that is our react build
#into nginx html directory where it will serve our index file
COPY --from=build-stage /app/build/ /usr/share/nginx/html