Is Internet Explorer 11 supported by Virtuozzo containers for Windows 6.0 or Virtuozzo containers for Windows 4.6?
Internet Explorer 11 support is implemented for Virtuozzo containers 6.0 on Windows 2008 R2 SP1 hosts only.
Check the following article with installation instructions:
126552 How to install Internet Explorer 11 on Virtuozzo containers for Windows 6.0?
According to Minimum system requirements for IE11, Internet Explorer 11 is not available for Windows 2012 (non-R2), therefore IE10 is the only actual browser for Windows Containers 2012.
With IE10 Windows 2012 (non-R2) will receive technical support and security updates