Replace wget with curl -fsSL, normalize downloads, and prep for IPv6 (#3455)

* Initial Call, Switch from curl -s to curl -fsSL and wget to curl -fssL

* more switches

* switch vms

* more curls

* More curls

* more

* more

* more changes

* more

* prepare ipv6 calls

* change frontend to ipv6

* Formatting

* Fromatting

* Update gomft.sh

* Update gomft-install.sh

* Update ersatztv.sh

* Update build.func

---------

Co-authored-by: Slaviša Arežina <58952836+tremor021@users.noreply.github.com>

ct/proxmox-mail-gateway.sh

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-source <(curl -s https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/misc/build.func)
+source <(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/misc/build.func)
 # Copyright (c) 2021-2025 community-scripts ORG
 # Author: thost96 (thost96)
 # License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
@@ -23,7 +23,10 @@ function update_script() {
   header_info
   check_container_storage
   check_container_resources
-  if [[ ! -e /usr/bin/pmgproxy ]]; then msg_error "No ${APP} Installation Found!"; exit; fi
+  if [[ ! -e /usr/bin/pmgproxy ]]; then
+    msg_error "No ${APP} Installation Found!"
+    exit
+  fi
   msg_info "Updating ${APP}"
   $STD apt-get update
   $STD apt-get -y upgrade
@@ -38,4 +41,4 @@ description
 msg_ok "Completed Successfully!\n"
 echo -e "${CREATING}${GN}${APP} setup has been successfully initialized!${CL}"
 echo -e "${INFO}${YW} Access it using the following URL:${CL}"
-echo -e "${TAB}${GATEWAY}${BGN}https://${IP}:8006/${CL}"
+echo -e "${TAB}${GATEWAY}${BGN}https://${IP}:8006/${CL}"