matterbridge - add option to choose CPU architecture

seqs/matterbridge.sh

@@ -127,14 +127,27 @@ step_12() {
 }
 
 
-step_30_info() { echo "Download go"; }
+step_30_info() {
+  echoinfoArgs "[OPTIONS]"
+  echo "Download go"
+  echoinfo " [OPTIONS]"
+  echoinfo "   --arch,  -a  :  armhf(default), arm64"
+  echoinfo "                   CPU architecture for downloading go sources"
+}
 step_30_alias() { ALIAS="build"; }
 step_30() {
+  shift
   local goVer="$(curl --silent -L https://go.dev/doc/devel/release | \
     grep --max-count 1 -E "go[[:digit:]\.]{3,}" |\
     sed 's/.*go\([[:digit:]\.]\+\).*/\1/g')"
-  local goArch="armv6l" #arm64"
+  local goArch="armhf" #arm64"
   local goDownUrl="https://go.dev/dl/go${goVer}.linux-${goArch}.tar.gz"
+  case "${1}" in
+    --arch|-a)
+      goArch="${2}"
+      shift 2 ;;
+  esac
+  [[ "${goArch}" == "armhf" ]] && goArch="armv6l"
 
   # Download latest go
   if [ ! -e "${goDir}" ] ; then