build(app): Fix deploy commands

app.py

@@ -5,6 +5,7 @@ subprocess.run("echo 'npm version:' && npm --version", shell=True)
 subprocess.run("pwd && ls -al", shell=True)
 
 subprocess.run("export PORT=7860", shell=True)
-subprocess.run("npm run build --prefix app/build ", shell=True)
+subprocess.run("echo 'PORT set to $PORT'", shell=True)
+
+subprocess.run("npm run build --prefix app", shell=True)
 subprocess.run("node app/build", shell=True)
-subprocess.run("pwd && ls -al", shell=True)