Adding Mime type to iis

Hi,
My DockerFile looks like this:

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FROM microsoft/wcf:4.7

RUN mkdir C:\WcfServiceTest

RUN powershell -NoProfile -Command
Import-module IISAdministration;
New-IISSite -Name “WcfServiceTest” -PhysicalPath C:\WcfServiceTest -BindingInformation “*:%PORT%:”

EXPOSE %PORT%

COPY /Publish/ C:\WcfServiceTest
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How can I add mime types to the IIS?

Thanks,
Ron