feat: add password from stdin

jina/hubapi/docker.py

@@ -82,8 +82,9 @@ def _check_docker_image(self, name: str):
 
     def login(self):
         """A wrapper of docker login """
-        if self.args.username and self.args.password:
-            self._client.login(username=self.args.username, password=self.args.password,
+        password = self.args.password or self.args.password_stdin.read()
+        if self.args.username and password:
+            self._client.login(username=self.args.username, password=password,
                                registry=self.args.registry)
         else:
             # use default login

jina/main/parser.py

@@ -55,9 +55,14 @@ def set_logger_parser(parser=None):
 def set_hub_base_parser(parser=None):
     if not parser:
         parser = set_base_parser()
-
+    import sys
     parser.add_argument('--username', type=str, help='the registry username')
-    parser.add_argument('--password', type=str, help='the plaintext password')
+    _gp = parser.add_mutually_exclusive_group()
+    _gp.add_argument('--password-stdin',  type=argparse.FileType('r'), default=(None if sys.stdin.isatty() else sys.stdin),
+                        help='take the password from stdin')
+    _gp.add_argument('--password', type=str,
+                     default=(None if sys.stdin.isatty() else sys.stdin),
+                     help='the plaintext password')
     parser.add_argument('--registry', type=str, default='https://index.docker.io/v1/',
                         help='the URL to the registry, e.g. https://index.docker.io/v1/')