Windows: Add initialConsoleSize to process

Signed-off-by: John Howard <jhoward@microsoft.com>

config.md

@@ -118,6 +118,10 @@ For more information about SELinux, see  [Selinux documentation](http://selinuxp
 * **`noNewPrivileges`** (bool, optional) setting `noNewPrivileges` to true prevents the processes in the container from gaining additional privileges.
 [The kernel doc](https://www.kernel.org/doc/Documentation/prctl/no_new_privs.txt) has more information on how this is achieved using a prctl system call.
 
+For Windows-based systems, the process structure supports the following process specific fields:
+
+* **`initialconsolesize`** (array of ints, optional) specifies the initial console size (height, width) of the terminal if attached.
+
 ### User
 
 The user for the process is a platform-specific structure that allows specific control over which user the process runs as.

specs-go/config.go

@@ -51,6 +51,8 @@ type Process struct {
 	ApparmorProfile string `json:"apparmorProfile,omitempty" platform:"linux"`
 	// SelinuxLabel specifies the selinux context that the container process is run as. (this field is platform dependent)
 	SelinuxLabel string `json:"selinuxLabel,omitempty" platform:"linux"`
+	// InitialConsoleSize contains the initial h,w of the console size. (this field is platform dependent)
+	InitialConsoleSize [2]int `json:"initialConsoleSize" platform:"windows"`
 }
 
 // User specifies Linux/Solaris specific user and group information