Fix serve command options in Dockerfile

- Remove unsupported --host flag from serve command
- The serve package with -l option binds to 0.0.0.0 by default in containers
- Container will now start properly without ArgError

Dockerfile

@@ -23,4 +23,4 @@ RUN npm install -g serve
 EXPOSE 3000
 
 # Start the application using serve directly
-CMD ["serve", "-s", "build", "-l", "3000", "--host", "0.0.0.0"]
+CMD ["serve", "-s", "build", "-l", "3000"]