title: I keep getting the "docker build" requires exactly 1 argument(s) error
body: <p>First of, I am trying to follow along with this <a href="http://fluentbytes.com/deploying-asp-net-4-5-to-docker-on-windows/" rel="noreferrer">guide</a>.</p>
  <p>So far I have the host up and running, but I am stuck at this one point. I've installed the windowsservercore image, and I installed the IIS image and tagged it 'windowsserveriis'. Now I need to install ASP.NET 4.5, and I use the following command</p>
  <blockquote>
  <p>docker build –t windowsserveriisaspnet .</p>
  </blockquote>
  <p>I should maybe add that I create a folder for my Docker images. So I have a C:\dev\TestProject\DockerImages and the a folder for each Dockerfile. Now, I am a bit unsure about this, as the guide never mentions how to actually create the files, so I thought I would divide them up just to be safe (and also be able to have them be named just 'Dockerfile' to avoid confusion).</p>
  <p>Anyways, the above command prints out the following error message:</p>
  <blockquote>
  <p>docker : &quot;docker build&quot; requires exactly 1 argument(s).</p>
  <p>At line:1 char:1</p>
  <p>docker build –t windowsserveriisaspnet .</p>
  </blockquote>
  <p>My Dockerfile looks like this:</p>
  <blockquote>
  <p>FROM windowsserveriis</p>
  <p>RUN dism /online /enable-feature /featurename:IIS-ASPNET45</p>
  </blockquote>
  <p>My initial thought was that i forgot the dot at the end, but that is not the case. I also tried replacing the dot with '--file=&quot;DockerfileASPNET&quot;' (where I renamed the file). However nothing seems to work.</p>
  <p>So, what am I missing? Thanks in advance..</p>