Install and update VS Code from official binary for Linux version which don't support deb, rpm or Snap (tested on Solus)

update_vscode.sh

#!/bin/bash
# VS Code updater

# get installed version
installed=$($HOME/bin/VSCode-linux-x64/bin/code -v 2>/dev/null | head -n 1)

# get latest release from Github
latest=$(curl -s https://github.com/Microsoft/vscode/releases/latest | grep -Po 'tag/\K[0-9\.]*') 

if [ "$installed" == "$latest" ]
then 
    notify-send -i ok "VS Code is up to date" "Current version $installed"
    exit
fi

if pidof code
then
  if zenity --question --text "Close open VS Code to proceed with the upgrade?"
  then
    killall -s SIGQUIT code
  else
    notify-send -i task-attention "New VS Code version $latest" "Please close all instances of VS Code to update."
    exit
  fi
fi

notify-send -i software-update-available "Updating VS Code" "Will download and install version $latest"

current=$(pwd)
if [ ! -d "$HOME/bin" ]
then
  if ! mkdir "$HOME/bin" 
  then
    notify-send -i error "Can't create folder '$HOME/bin'" "Please check path and access rights."
    exit
  fi
fi

cd "$HOME/bin" || exit 1

# automatically gets the latest version of VS Code
rm "stable" &>/dev/null
if ! wget "https://update.code.visualstudio.com/latest/linux-x64/stable" &>/dev/null 
then
  notify-send -i error "Download of new VS Code version failed." "Try manual download"
  exit 1
fi

# remove currently installed version of VS Code and replace it with the new downloaded one
rm -r VSCode-linux-x64 &>/dev/null
tar -xf "stable" &>/dev/null
rm "stable"

notify-send -i ok "Successfully updated VS Code" "New version $latest installed."

cd "$current" || exit

vscode-url-handler.desktop

[Desktop Entry]
Name=Visual Studio Code - URL Handler
Comment=Code Editing. Redefined.
GenericName=Text Editor
Exec=/home/user/bin/VSCode-linux-x64/code --no-sandbox --open-url %U
Icon=/home/user/bin/VSCode-linux-x64/resources/app/resources/linux/code.png
Type=Application
NoDisplay=true
StartupNotify=true
Categories=Utility;TextEditor;Development;IDE;
MimeType=x-scheme-handler/vscode;
Keywords=vscode;

vscode.desktop

[Desktop Entry]
Name=Visual Studio Code
Comment=Code Editing. Redefined.
GenericName=Text Editor
Exec=/home/user/bin/VSCode-linux-x64/code --no-sandbox --unity-launch %F
Icon=/home/user/bin/VSCode-linux-x64/resources/app/resources/linux/code.png
Type=Application
StartupNotify=false
StartupWMClass=Code
Categories=Utility;TextEditor;Development;IDE;
MimeType=text/plain;inode/directory;
Actions=new-empty-window;
Keywords=vscode;

[Desktop Action new-empty-window]
Name=New Empty Window
Exec=/home/user/bin/VSCode-linux-x64/code --no-sandbox --new-window %F
Icon=/home/user/bin/VSCode-linux-x64/resources/app/resources/linux/code.png

The script update_vscode.shcan be used to install and update Microsoft VS Code from the official binary. It get's installed/updated under the user home in ~/bin/ folder in some Linux OS.

The .desktop files are used for launching the VS code (if supported by the used Linux OS). They are modifications from the .deskop files contained in the official .debpackages.