added engine seperation from posts and entrypoint for compose building

Dockerfile

@@ -17,12 +17,17 @@ RUN npm ci
 
 # Copy application source files
 COPY . .
+RUN chmod +x /app/entrypoint.sh
 
-# Build static production assets
+# Pre-compile baseline static assets
 RUN npm run build
 
 # Expose web server port dynamically
 EXPOSE ${PORT}
 
-# Serve site with npm
-CMD ["npm", "start"]
+# Native container healthcheck probing IPv4 loopback
+HEALTHCHECK --interval=30s --timeout=5s --start-period=3s --retries=3 \
+  CMD node -e "fetch('http://127.0.0.1:' + (process.env.PORT || 8080) + '/healthz').then(r => process.exit(r.ok ? 0 : 1)).catch(() => process.exit(1))"
+
+# Serve site using dynamic entrypoint
+ENTRYPOINT ["/app/entrypoint.sh"]