add: .next

Dockerfile

@@ -9,6 +9,15 @@ FROM node:20-alpine AS builder
 WORKDIR /app
 COPY --from=deps /app/node_modules ./node_modules
 COPY . .
+
+# TRAER LOS ARGUMENTOS DEL DOCKER COMPOSE PARA QUE NEXT.JS LOS VEA
+ARG NEXT_PUBLIC_SUPABASE_URL
+ARG NEXT_PUBLIC_SUPABASE_ANON_KEY
+
+# PASARLOS COMO VARIABLES DE ENTORNO EN TIEMPO DE COMPILACIÓN
+ENV NEXT_PUBLIC_SUPABASE_URL=$NEXT_PUBLIC_SUPABASE_URL
+ENV NEXT_PUBLIC_SUPABASE_ANON_KEY=$NEXT_PUBLIC_SUPABASE_ANON_KEY
+
 # Next.js compila aquí (esta es la parte que consume RAM)
 RUN npm run build
 
@@ -19,9 +28,9 @@ ENV NODE_ENV production
 ENV PORT=3020
 
 COPY --from=builder /app/public ./public
-COPY --from=builder /app/.next ./.next
-COPY --from=builder /app/node_modules ./node_modules
-COPY --from=builder /app/package.json ./package.json
+# El truco de standalone: Next.js mete todo lo necesario en esta carpeta
+COPY --from=builder /app/.next/standalone ./
+COPY --from=builder /app/.next/static ./.next/static
 
 EXPOSE 3020