This is based on script for using IP 10.254.254.254 alias from here: https://gist.github.com/ralphschindler/535dc5916ccbd06f53c1b0ee5a868c93
This launchd script will ensure that your Docker environment on your Mac will have 192.168.99.1 as an alias on your loopback device (127.0.0.1). The command being run is ifconfig lo0 alias 192.168.99.1 255.255.255.0
Copy/Paste the following in terminal with sudo (must be root as the target directory is owned by root)...