Dockerfile

# --- ETAPA 1: Construir el Frontend de React ---
FROM node:20-alpine AS builder
WORKDIR /app
COPY package.json .
RUN npm install

# --- AQUÍ RECIBIMOS LAS VARIABLES SECRETAS ---
# Definimos que esperamos estos argumentos
ARG VITE_FIREBASE_API_KEY
ARG VITE_FIREBASE_AUTH_DOMAIN
ARG VITE_FIREBASE_PROJECT_ID
ARG VITE_FIREBASE_STORAGE_BUCKET
ARG VITE_FIREBASE_MESSAGING_SENDER_ID
ARG VITE_FIREBASE_APP_ID

# Las convertimos en variables de entorno para el comando build
ENV VITE_FIREBASE_API_KEY=$VITE_FIREBASE_API_KEY
ENV VITE_FIREBASE_AUTH_DOMAIN=$VITE_FIREBASE_AUTH_DOMAIN
ENV VITE_FIREBASE_PROJECT_ID=$VITE_FIREBASE_PROJECT_ID
ENV VITE_FIREBASE_STORAGE_BUCKET=$VITE_FIREBASE_STORAGE_BUCKET
ENV VITE_FIREBASE_MESSAGING_SENDER_ID=$VITE_FIREBASE_MESSAGING_SENDER_ID
ENV VITE_FIREBASE_APP_ID=$VITE_FIREBASE_APP_ID

COPY . .
RUN npm run build

# --- ETAPA 2: Servidor de Producción ---
FROM node:20-alpine
WORKDIR /app
COPY package.json .
RUN npm install --omit=dev
COPY server.mjs .
COPY --from=builder /app/dist ./dist

EXPOSE 7860
CMD ["node", "server.mjs"]