feat(docker): update Dockerfile and compose configuration, enhance README for deployment methods

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:24-alpine AS base
+FROM node:22-alpine AS base
 
 # Enable and prepare pnpm via Corepack
 RUN corepack enable && corepack prepare pnpm@latest --activate
@@ -37,7 +37,7 @@ WORKDIR /app/packages/socket
 RUN if [ -f "tsconfig.json" ]; then pnpm build; fi
 
 # ----- RUNNER -----
-FROM node:24-alpine AS runner
+FROM node:22-alpine AS runner
 WORKDIR /app
 
 # Create a non-root user for better security