simple asterisk build for docker image, version 20-latest

20-debian/asterisk-build.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+apt-get -y install build-essential libssl-dev libedit-dev uuid-dev libxml2-dev libsqlite3-dev
+
+cd /usr/src
+curl -L http://downloads.asterisk.org/pub/telephony/asterisk/asterisk-20-current.tar.gz > asterisk.tar.gz
+tar zxf asterisk.tar.gz 
+cd asterisk-20.*
+# set compiler flags for cross system compatibility
+export ASTCFLAGS="-g -O2 -march=x86-64 -fstack-protector-strong -Wformat -Werror=format-security"
+# configure to use the bundled jansson libs (less dependancy on base image)
+./configure --with-jansson-bundled
+make
+make install
+make samples
+
+cd /usr/src
+rm -rf *
+
+apt-get -y purge build-essential
+apt -y autoremove
+
+adduser --system --home /var/lib/asterisk --shell /sbin/nologin --group asterisk
+chown -R asterisk:asterisk /var/lib/asterisk
+