chore: Update devcontainer postCreate.sh script

This commit updates the postCreate.sh script in the .devcontainer directory. It removes the unnecessary shebang line and adds a command to print the current working directory. Additionally, it updates the command to initialize and update submodules and installs the required Python packages specified in the requirements.txt files. These changes improve the setup process for the devcontainer and ensure that all dependencies are properly installed.

.devcontainer/postCreate.sh

@@ -1,6 +1,5 @@
-#!/bin/bash
-
 ## This script is run after the devcontainer is created. It installs the necessary dependencies for the project.
+pwd
 git submodule update --init --recursive
 pip install -r ./requirements.txt
 pip install -r ./fast-pysf/requirements.txt