upgrade docker image from node 20 to 26

Dockerfile

@@ -1,6 +1,6 @@
 # syntax=docker.io/docker/dockerfile:1
 
-FROM node:20-alpine AS base
+FROM node:26-alpine AS base
 
 # Install dependencies only when needed
 FROM base AS deps
@@ -63,4 +63,4 @@ ENV PORT=3000
 # server.js is created by next build from the standalone output
 # https://nextjs.org/docs/pages/api-reference/config/next-config-js/output
 ENV HOSTNAME="0.0.0.0"
-CMD ["node", "server.js"]
+CMD ["node", "server.js"]