[arm64] Port scripts between garage-hortusfox to support arm64 (#15207)

* add helper function for get_arch_value

* [arm64] Port scripts between garage-hortusfox to support arm64

Adds check for docker tag & arm64 in build.func and if present adds apparmor unconfined to get docker to work on non pve kernel

* revert added tags, remove apparmor unconfined, move to setup_docker

install/gotify-install.sh

@@ -13,8 +13,8 @@ setting_up_container
 network_check
 update_os
 
-fetch_and_deploy_gh_release "gotify" "gotify/server" "prebuild" "latest" "/opt/gotify" "gotify-linux-amd64.zip"
-chmod +x /opt/gotify/gotify-linux-amd64
+fetch_and_deploy_gh_release "gotify" "gotify/server" "prebuild" "latest" "/opt/gotify" "gotify-linux-$(arch_resolve).zip"
+chmod +x /opt/gotify/gotify-linux-$(arch_resolve)
 
 msg_info "Creating Service"
 cat <<EOF >/etc/systemd/system/gotify.service
@@ -27,7 +27,7 @@ After=network.target
 Type=simple
 User=root
 WorkingDirectory=/opt/gotify
-ExecStart=/opt/gotify/./gotify-linux-amd64
+ExecStart=/opt/gotify/./gotify-linux-$(arch_resolve)
 Restart=always
 RestartSec=3