FROM node:20-alpine

WORKDIR /app

# Copier package.json
COPY frontend/package*.json ./

# Installer dépendances
RUN npm install

# Copier code source
COPY frontend/ .

# Build avec npm run build (CRA standard)
RUN npm run build

# Installer serve pour servir la build
RUN npm install -g serve

EXPOSE 3000

# Servir la build
CMD ["serve", "-s", "build", "-l", "3000"]