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Dockerfile

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+# --- 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"]