Update traefik.sh

tweak

ct/traefik.sh

@@ -55,7 +55,7 @@ function default_settings() {
 function update_script() {
 header_info
 if [[ ! -f /etc/systemd/system/traefik.service ]]; then msg_error "No ${APP} Installation Found!"; exit; fi
-RELEASE=3.0.4 #$(curl -s https://api.github.com/repos/traefik/traefik/releases/latest | grep "tag_name" | awk '{print substr($2, 3, length($2)-4) }')
+RELEASE=$(curl -s https://api.github.com/repos/traefik/traefik/releases | grep -oP '"tag_name":\s*"v\K[\d.]+?(?=")' | sort -V | tail -n 1)
 msg_info "Updating $APP LXC"
 if [[ "${RELEASE}" != "$(cat /opt/${APP}_version.txt)" ]] || [[ ! -f /opt/${APP}_version.txt ]]; then
   wget -q https://github.com/traefik/traefik/releases/download/v${RELEASE}/traefik_v${RELEASE}_linux_amd64.tar.gz