Update app.py

app.py

@@ -1,14 +1,15 @@
 import subprocess
+import os
 
 # Clone the repository
 subprocess.run(['git', 'clone', 'https://github.com/abacaj/replit-3B-inference.git'])
 
 # Change directory
-subprocess.run(['cd', 'replit-3B-inference'])
+os.chdir('replit-3B-inference')
 
 # Create and activate virtual environment
 subprocess.run(['python', '-m', 'venv', 'env'])
-subprocess.run(['source', 'env/bin/activate'])
+subprocess.run(['env/bin/activate'])
 
 # Update submodules
 subprocess.run(['git', 'submodule', 'update', '--init', '--recursive'])