Some references for setup raspberry

Useful references:

• https://www.raspberrypi.org/documentation/configuration/wireless/access-point.md#internet-sharing
• https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=62371

Setup access point: https://www.raspberrypi.org/documentation/configuration/wireless/access-point.md
stop at https://www.raspberrypi.org/documentation/configuration/wireless/access-point.md#internet-sharing

fixing wlan0 gets assigned to wifi dongle
https://www.raspberrypi.org/forums/viewtopic.php?p=756998#p756998

• setup US region https://askubuntu.com/a/820191/440310
• setup hotspot using 5ghz https://github.com/raspberrypi/linux/issues/2619#issuecomment-410703338