/Add-Package /PackagePath: /IgnoreCheck Adds one or more packages to an image. /PackagePath can point to either a .cab file, ...

/Add-Package /PackagePath: [/IgnoreCheck]

  Adds one or more packages to an image. /PackagePath can point to either 
  a .cab file, a .msu file or a folder.
  Use the /IgnoreCheck switch to skip installing the package if applicability
  checks fail.

    Examples:
      DISM.exe /Image:C:	est\offline /Add-Package 
        /PackagePath:C:	est\packages /IgnoreCheck

      DISM.exe /Image:C:	est\offline /Add-Package 
        /PackagePath:C:	est\packages\package.cab

      DISM.exe /Image:C:	est\offline /Add-Package 
        /PackagePath:C:\Windows-KB000006-v1-x86-en-us.msu