Install Powershell in Ubuntu 17.04

I'm trying to install Powershell in Ubuntu 17.04 as the following these steps:

curl https://packages.microsoft.com/keys/microsoft.asc | sudo apt-key add -

curl https://packages.microsoft.com/config/ubuntu/16.04/prod.list | sudo tee /etc/apt/sources.list.d/microsoft.list

sudo apt-get update

sudo apt-get install -y powershell

I know I'm using 16.04 packages/built to install. Unfortunately I couldn't find the the 17.04 one.

And here is what error I've got with sudo apt-get install -y powershell

The following packages have unmet dependencies:  
  powershell : Depends: libicu55 but it is not installable 

Then I tried:

apt-cache search libicu

I couldn't find out the libicu55 to install either. Are there any way to install Powershell in Ubuntu 17.04?

Download libicu55 package from http://packages.ubuntu.com/en/xenial/amd64/libicu55/download

wget http://security.ubuntu.com/ubuntu/pool/main/i/icu/libicu55_55.1-7ubuntu0.4_amd64.deb
sudo apt install ./libicu55_55.1-7ubuntu0.4_amd64.deb

If the sudo apt install fails, download the file directly from the provided link via the browser. Then open it with Software Install.

Then follow instructions for 16.04

...
sudo apt install -y powershell

Source: https://asknicks.blogspot.ru/2017/05/install-powershell-on-ubuntu-17.html

Download the AppImage version and follow the instructions:

Using a recent Linux distribution, download the AppImage PowerShell-6.0.0-alpha.18-x86_64.AppImage from the releases page onto the Linux machine.

Then execute the following in the terminal:

chmod a+x PowerShell-6.0.0-beta.5-x86_64.AppImage
./PowerShell-6.0.0-beta.5-x86_64.AppImage

The AppImage lets you run PowerShell without installing it. It is a portable application that bundles PowerShell and its dependencies (including .NET Core's system dependencies) into one cohesive package. This package works independently of the user's Linux distribution, and is a single binary.