Update app.py

app.py

@@ -1,9 +1,9 @@
 import subprocess
 
-subprocess.run("wget --version", shell=True)
 subprocess.run("wget https://raw.githubusercontent.com/nvm-sh/nvm/master/install.sh && bash install.sh", shell=True)
 subprocess.run(". ~/.bashrc", shell=True)
-subprocess.run("export NVM_DIR='$HOME/.nvm'", shell=True)
+subprocess.run("echo 'setting NVM_DIR:' && export NVM_DIR='$HOME/.nvm'", shell=True)
+subprocess.run("[ -s '$NVM_DIR/nvm.sh' ] && \. '$NVM_DIR/nvm.sh'", shell=True)
 subprocess.run("nvm -v", shell=True)
 subprocess.run("nvm install v18", shell=True)
 #subprocess.run("curl -fsSL https://deb.nodesource.com/setup_18.x", shell=True)