I've the solution.

Expand the web.config by adding the following source code:

<configuration>
   <system.web>
      <compilation>
         <buildProviders>
           <remove extension=".lic" />
           <add extension=".lic"
               type="System.Web.Compilation.ForceCopyBuildProvider"/>
         </buildProviders>
      </compilation>
   </system.web>
</configuration>

Now the license-file is published within the whole website.