separate docker build

build-modules

@@ -11,14 +11,18 @@ import time
 import common
 
 parser = common.get_argparse(argparse_args={
-    'description': 'Build our Linux kernel module examples'
+    'description': '''\
+Build our Linux kernel module without using Buildroot.
+
+See also:https://github.com/cirosantilli/linux-kernel-module-cheat#host
+'''
 })
 common.add_build_arguments(parser)
 parser.add_argument(
     '--host',
     action='store_true',
     default=False,
-    help='Build the modules for the host instead of guest',
+    help='Build the Linux kernel modules for the host instead of guest',
 )
 parser.add_argument(
     'kernel_modules',