Update on_startup.sh

on_startup.sh

@@ -1,5 +1,8 @@
 #!/bin/bash
-# Write some commands here that will run on root user before startup.
-# For example, to clone transformers and install it in dev mode:
-# git clone https://github.com/huggingface/transformers.git
-# cd transformers && pip install -e ".[dev]"
+# Install C++ compiler (g++) before startup.
+
+# Update package lists
+apt-get update
+
+# Install g++ (C++ compiler)
+apt-get install -y g++