wait for networkd online before curl invocation

1) wait for network-online.target before invoking curl
   as there's no synchronization with network setup for this script
2) don't hide curl errors - it may be easier to debug the issues
3) add log and comments

airootfs/root/.automated_script.sh

@@ -16,7 +16,13 @@ automated_script ()
     script="$(script_cmdline)"
     if [[ -n "${script}" && ! -x /tmp/startup_script ]]; then
         if [[ "${script}" =~ ^((http|https|ftp)://) ]]; then
-            curl "${script}" --location --retry-connrefused --retry 10 -s -o /tmp/startup_script >/dev/null
+            # there's no synchronization for network availability before executing this script
+            printf '%s: waiting for network-online.target\n' "$0"
+            until systemctl --quiet is-active network-online.target; do
+                sleep 1
+            done
+            printf '%s: downloading %s\n' "$0" "${script}"
+            curl "${script}" --location --retry-connrefused --retry 10 -s -o /tmp/startup_script
             rt=$?
         else
             cp "${script}" /tmp/startup_script
@@ -24,6 +30,9 @@ automated_script ()
         fi
         if [[ ${rt} -eq 0 ]]; then
             chmod +x /tmp/startup_script
+            printf '%s: executing automated script\n' "$0"
+            # note that script is executed when other services (like pacman-init) may be still in progress, please
+            # synchronize to "systemctl is-system-running --wait" when your script depends on other services
             /tmp/startup_script
         fi
     fi