Use getopt for argument parsing

setup.sh

@@ -103,8 +103,17 @@ ROLE=""
 NETBIRD_KEY=""
 NETBIRD_IP=""
 NETBIRD_PORT=""
-
-while [[ $# -gt 0 ]]; do
+parse_args() {
+  local opts
+  if ! opts=$(getopt \
+    -o u:k:s:m:v:r:n:i:p:h \
+    --long user:,sshkey:,ssh-ip:,monitor-ip:,vector:,role:,netbird-key:,netbird-ip:,netbird-port:,help \
+    -n "$0" -- "$@"); then
+    usage
+    exit 1
+  fi
+  eval set -- "$opts"
+  while true; do
     case "$1" in
       -u|--user) USERNAME="$2"; shift 2 ;;
       -k|--sshkey) SSH_KEY="$2"; shift 2 ;;
@@ -116,9 +125,13 @@ while [[ $# -gt 0 ]]; do
       -i|--netbird-ip) NETBIRD_IP="$2"; shift 2 ;;
       -p|--netbird-port) NETBIRD_PORT="$2"; shift 2 ;;
       -h|--help) usage; exit 0 ;;
+      --) shift; break ;;
       *) log "Unknown parameter: $1"; usage; exit 1 ;;
     esac
   done
+}
+
+parse_args "$@"
 
 if [[ -z "$USERNAME" || -z "$SSH_KEY" ]]; then
   usage