# Stage 1: build the React app
FROM node:20-alpine AS builder

WORKDIR /app

COPY package*.json ./
RUN npm ci

COPY . .

# These are baked into the JS bundle at build time
ARG REACT_APP_API_URL
ARG REACT_APP_SERIAL_URL
ENV REACT_APP_API_URL=$REACT_APP_API_URL
ENV REACT_APP_SERIAL_URL=$REACT_APP_SERIAL_URL

RUN npm run build

# Stage 2: serve with nginx
FROM nginx:alpine

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

EXPOSE 80