How to install/update MacOS using not latest version

Use the App Store

For macOS Mojave 10.14 or later.

• Tahoe 26 (Latest, use Software Update or Terminal)
• Sequoia 15
• Sonoma 14
• Ventura 13
• Monterey 12
• Big Sur 11
• Catalina 10.15
• Mojave 10.14
• High Sierra 10.13

How to run Docker in Docker with Gitlab CI/CD

Here is the sample how to use in Gitlab pipelines docker-cli

Additional info on services could be found in official documentation https://docs.gitlab.com/ci/services/

How to flush DNS cache on MacOS

To flush the DNS cache on macOS, open the Terminal and enter the command

1

sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder

Please, note, it may require Administrator's permissions.

How to add/remove MacOS Dock separator

There are 2 ways to do it.