hal/docker-freepbx: Docker container with asterisk and freepbx on ubuntu 20.04

Hal De 347b3c7bd6 initial code commit from local (no history)		4 lat temu
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99-local.conf	347b3c7bd6 initial code commit from local (no history)	4 lat temu
defaults-debian.conf	347b3c7bd6 initial code commit from local (no history)	4 lat temu