Add ArgsEscaped field to image config

config.md

@@ -165,6 +165,10 @@ Note: Any OPTIONAL field MAY also be set to null, which is equivalent to being a
 
     The field contains the system call signal that will be sent to the container to exit. The signal can be a signal name in the format `SIGNAME`, for instance `SIGKILL` or `SIGRTMIN+3`.
 
+  - **ArgsEscaped** *boolean*, OPTIONAL
+
+    This field is used for Windows images to indicate that the `Entrypoint` and `Cmd` fields will have only a single element, which has already been escaped. In this case their values should be used as-is without further escaping.
+
 - **rootfs** *object*, REQUIRED
 
    The rootfs key references the layer content addresses used by the image.

schema/config-schema.json

@@ -83,6 +83,9 @@
         },
         "StopSignal": {
           "type": "string"
+        },
+        "ArgsEscaped": {
+          "type": "boolean"
         }
       }
     },

specs-go/v1/config.go

@@ -48,6 +48,10 @@ type ImageConfig struct {
 
 	// StopSignal contains the system call signal that will be sent to the container to exit.
 	StopSignal string `json:"StopSignal,omitempty"`
+
+	// ArgsEscaped is used for Windows images to indicate that the Entrypoint and Cmd have already been escaped and should be
+	// used directly as the command line.
+	ArgsEscaped bool `json:"ArgsEscaped,omitempty"`
 }
 
 // RootFS describes a layer content addresses