[docker] Use TypedDict and SupportsGet for kwargs_from_context

stubs/docker/docker/context/api.pyi

@@ -1,9 +1,18 @@
-from _typeshed import Incomplete
-from collections.abc import Mapping, Sequence
+from collections.abc import Sequence
+from typing import Any, Protocol, TypedDict, type_check_only
 
 from docker.context.context import Context
 from docker.tls import TLSConfig
 
+@type_check_only
+class _SupportsGet(Protocol):
+    def get(self, key: str, default: Any = ...) -> Any: ...
+
+@type_check_only
+class _ContextKwargs(TypedDict, total=False):
+    base_url: str
+    tls: TLSConfig
+
 class ContextAPI:
     DEFAULT_CONTEXT: Context
     @classmethod
@@ -24,8 +33,8 @@
     def get_current_context(cls) -> Context: ...
     @classmethod
     def kwargs_from_context(
-        cls, name: str | None = None, environment: Mapping[str, str | None] | None = None
-    ) -> dict[str, Incomplete]: ...  # TODO: Use TypedDict, use SupportsGet
+        cls, name: str | None = None, environment: Mapping[str, str | None] | None = None  # TODO: Use SupportsGet
+    ) -> _ContextKwargs: ...
     @classmethod
     def set_current_context(cls, name: str = "default") -> None: ...
     @classmethod