removed unnecessary node business from action, downgraded dockerfile to node 16

Author: colevandersWands

Dockerfile

@@ -1,5 +1,5 @@
-# Use Node 18 (study-lenses compatibility requirement)
-FROM node:18-alpine AS base
+# Use Node 16 (study-lenses compatibility requirement)
+FROM node:16-alpine AS base
 
 # Install dependencies only when needed
 FROM base AS deps
@@ -40,4 +40,4 @@ HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
   CMD node -e "require('http').get('http://localhost:4005/', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"
 
 # Start the application
-CMD ["npm", "run", "demo:deployed"]
+CMD ["npm", "run", "demo:deployed"]