Dock Icon Hider is a macOS utility to hide and show Dock icons of apps.
Clone the GitHub repo and open the project in Xcode:
git clone https://github.com/johnbean393/Dock-Icon-Hider; cd "Dock-Icon-Hider"; open "Dock Icon Hider.xcodeproj"
Build the app and run it!
Use "Toggle Hide" to toggle the hide state of an app's Dock icon.
Use "Remove Hide Preference" to reset an app.
Some apps will refuse to launch after their bundle is modified. Use "Re-sign App" to re-sign an app. Enter your Developer ID email address in the text field, then click "Start".