diff --git a/userdocker/config/default.py b/userdocker/config/default.py
index a9db722..81a556e 100644
--- a/userdocker/config/default.py
+++ b/userdocker/config/default.py
@@ -117,6 +117,15 @@
     ],
 }
 
+# The following arguments sets default values that can be 
+# overwritten by the user.
+# Do not include these args in ARGS_AVAILABLE or ARGS_ALWAYS
+ARGS_DEFAULT = {
+    'run': {
+        #'--memory': '50m'
+    }    
+}
+
 
 # Volume mounts:
 # - VOLUME_MOUNTS_ALWAYS will be mounted whether the user wants it or not
diff --git a/userdocker/helpers/parser.py b/userdocker/helpers/parser.py
index 29f41d3..78ce27d 100644
--- a/userdocker/helpers/parser.py
+++ b/userdocker/helpers/parser.py
@@ -5,6 +5,7 @@
 
 from ..config import ARGS_ALWAYS
 from ..config import ARGS_AVAILABLE
+from ..config import ARGS_DEFAULT
 
 
 class _PatchThroughAssignmentAction(argparse._AppendAction):
@@ -29,6 +30,10 @@ def init_subcommand_parser(parent_parser, scmd):
         patch_through_args=[],
     )
 
+    for arg, val in ARGS_DEFAULT.get(scmd, {}).items():
+        parser.add_argument(arg, dest="patch_through_args", action=_PatchThroughAssignmentAction)
+        parser.set_defaults(patch_through_args=parser.get_default('patch_through_args') + [f'{arg}={val}'])
+
     # patch args through
     _args_seen = []
     for args in ARGS_AVAILABLE.get(scmd, []) + ARGS_ALWAYS.get(scmd, []):