Creating a Dockerfile

As we will be hosting the web page in the container using IIS, we need to create a Dockerfile that uses the mcr.microsoft.com/windows/servercore/iis official image as the base image for the build. We will use a Docker image with the windowsservercore-1903 tag to ensure that we are running a version that matches the host OS and make it possible to use process isolation.

Create a new file in your workspace named Dockerfile, containing the following:

FROM mcr.microsoft.com/windows/servercore/iis:windowsservercore-1903

RUN powershell -NoProfile -Command Remove-Item -Recurse C:\inetpub\wwwroot\*
WORKDIR /inetpub/wwwroot
COPY index.html .

In the next subsection, you will learn how to manually build a Docker image based on the Dockerfile you have just created.