If your sudo command takes a long time and ends up with the error message unable to resolve host ... you need to enter your host into /etc/hosts: 127.0.0.7 YOURHOSTNAME
If you can't connect to the internet (sudo apt-get update fails):
You need to change /etc/resolv.conf and add nameserver 8.8.8.8
Because this is overwritten by Windows, you need to add the DNS in the network settings of your Windows host system
STEP 1: Install dependencies
You should install wsltty and set your desired font
sudo apt-add-repository ppa:fish-shell/release-2
sudo apt-get update
sudo apt-get install fish vim git -y