Dockerfile

# BUILD STAGE

FROM node:20 as build-stage
WORKDIR /app

ARG REACT_APP_SOCKET_URL

ENV REACT_APP_SOCKET_URL=$REACT_APP_SOCKET_URL

# copying the all the frontend and backend code
COPY frontend ./frontend
COPY backend ./backend

# installing the frontend and backend dependencies
RUN cd frontend && npm install
RUN cd backend && npm install

# building the frontend UI from the backend
RUN cd backend && npm run build:ui

# compiling TypeScript code
RUN cd backend && npm run tsc

# RUN STAGE

FROM node:20 as run-stage
WORKDIR /app

# copying the built frontend and backend code
COPY --from=build-stage /app/backend/build /app

# copying the backend package.json
COPY --from=build-stage /app/backend/package.json /app

# Installing the backend dependencies
RUN npm install --omit=dev

# Set NODE_ENV to production
ENV NODE_ENV=production

EXPOSE 3001

CMD ["node", "index.js"]