add prepare action

install-mpsd-software-environment.py

@@ -126,6 +126,10 @@ def main():
     # Add subparsers for different actions
     subparsers = parser.add_subparsers(dest='action', title='actions', description='valid actions', required=True)
 
+    # Add parser for "prepare action
+    parser_prepare = subparsers.add_parser('prepare', help='Prepare the environment for installation on the disk')
+    parser_prepare.add_argument('--release', type=str, required=True, help='Release version to install')
+
     # Add parser for "install" action
     parser_install = subparsers.add_parser('install', help='Install a software environment')
     parser_install.add_argument('--release', type=str, required=True, help='Release version to install')