Warning: Do not try those command in your main PC, I test in a virtual Machine
Note: Most of commands are from the Dockerfile in Reference section. If you want to test wine, just run their docker container
sudo dpkg --add-architecture i386
wget -qO - https://dl.winehq.org/wine-builds/winehq.key | sudo tee /etc/apt/trusted.gpg.d/winehq.asc
# for Ubuntu 20.04
sudo apt-add-repository 'deb https://dl.winehq.org/wine-builds/ubuntu/ focal main'sudo apt-get update
sudo apt-get -y install winehq-stable=7.0.0.0~focal-1
# if ask paudio (or similar) different from ...., I choose to use Default [N]wine --version
# It will prompt `wine-7.0`sudo mkdir /opt/wine-stable/share/wine/mono
sudo wget -O - https://dl.winehq.org/wine/wine-mono/7.0.0/wine-mono-7.0.0-x86.tar.xz | sudo tar -xJv -C /opt/wine-stable/share/wine/monosudo mkdir /opt/wine-stable/share/wine/gecko
sudo wget -O /opt/wine-stable/share/wine/gecko/wine-gecko-2.47.1-x86.msi https://dl.winehq.org/wine/wine-gecko/2.47.1/wine-gecko-2.47.1-x86.msi
sudo wget -O /opt/wine-stable/share/wine/gecko/wine-gecko-2.47.1-x86_64.msi https://dl.winehq.org/wine/wine-gecko/2.47.1/wine-gecko-2.47.1-x86_64.msiAfter above steps, you should find wine-mono & wine-gecko as following screenshots:

note: do not run any windows program before this setup Run following lines will add WINE env config in your .bashrc file
# Wine Setup
echo "export WINEPREFIX=~/prefix32" >> ~/.bashrc
echo "export WINEARCH=win32" >> ~/.bashrcUse following command in bash terminal, and it will take a while for setup.
wine /opt/wine-stable/lib/wine/i386-windows/explorer.exe
# or
/opt/wine-stable/bin/wine /opt/wine-stable/lib/wine/i386-windows/explorer.exeHere is screenshot of Windows explorer

If setup successfully, go to My Computer -> Control Panel -> Add/Remove Programs.
Then, there should have Wine Mono Windows Support and Wine Gecko.
Here are some screenshots:
After you double click Add/Remove Programs, nothing happenned or prompt some error message (such as no suitable program to open Add/Remove Programs). You may need to install Mono and Gecko, I used following steps.
If there is no any program on the list (in the middle of Add/Remove Programs window), need to install manually.
- Click
Installbutton on theAdd/Remove Programswindow, then, It will show upfile dialog. Find thewine-gecko-x86.msifile which download in previous step, and select & open it.
Then, wine-geckoshould show up on theAdd/Remove Programswindow.
- Click
Installbutton on theAdd/Remove Programswindow, then, It will show upfile dialog. Find thewinemono-support.msifile which download in previous step, and select & open it.
Then, Wine Mono Windows Supportshould show up on theAdd/Remove Programswindow.
Here are some screenshots:
Run Bult-in Windows programs (such as Task Manager, Notepad, and cmd.exe), you can find them in system32 folder

https://github.com/solarkennedy/wine-x11-novnc-docker/blob/master/Dockerfile
https://tecadmin.net/install-wine-on-ubuntu/





This tutorial only shows how to download the wine gecko installer files, not how to install them.
It's not even up to date. Use the guide in te official wine website instead.