Windows Subsystem for Linux / Bash on Ubuntu on Windows

Installing Bash on Ubuntu on Windows while behind a proxy server doesn’t work.

I’m reinstalling Bash on Ubuntu on Windows on my work laptop at home, where I’m not behind the work firewall and the need for the work proxy server.
WSL happily activates and downloads Ubuntu from the Windows store while at work, but once it fires up Ubuntu and starts running Apt to install updates, it chokes, as Ubuntu, and Apt, aren’t configured to use the proxy server. This means I have to cancel the install, which results in a working system, but it doesn’t complete its setup. I can fire up Bash, but it always logs in as root (doesn’t get to the user setup step). Once logged in I can configure Apt to use the proxy, and set the proxy environment and run the apt updates, but it still hasn’t gone through the full install process cleanly. This is a weakness in Microsoft / Canonical’s design. Ubuntu should either inherit the proxy config from Windows, or have a way to configure it in the setup, so it can perform a clean install.
I figured I’d give it a try from home, where it doesn’t need to go through a proxy, and see if it will properly complete the install. This worked perfectly on my personal laptop.

Edited: We have success! The prompt for a username means we got past the blocker seen at work.
Bash on Ubuntu on Windows install username prompt