refactor: Update the implementation of the re-installation timer to r…

…educe the likelihood of failure to execute

package/tailscale-install.service

@@ -1,13 +1,13 @@
 [Unit]
 Description=Ensure that Tailscale is installed on your device
 After=network.target
+Requires=mnt-.rwfs.mount
+Wants=tailscale-install.timer
 
 [Service]
 Type=oneshot
-RemainAfterExit=no
-Restart=no
 Environment=DEBIAN_FRONTEND=noninteractive
-ExecStart=/bin/bash /data/tailscale/manage.sh on-boot
+ExecStart=/bin/bash -c "/data/tailscale/manage.sh on-boot"
 
 [Install]
 WantedBy=multi-user.target

package/tailscale-install.timer

@@ -1,10 +1,11 @@
 [Unit]
 Description=Ensure that Tailscale is updated automatically on your device.
+Requires=tailscale-install.service
 
 [Timer]
 OnBootSec=5m
 OnUnitActiveSec=24h
 Unit=tailscale-install.service
 
 [Install]
-WantedBy=multi-user.target
+WantedBy=timers.target

package/unios_2.x.sh

@@ -90,9 +90,6 @@ _tailscale_install() {
 
         echo "Installing pre-start script to install Tailscale on firmware updates."
         ln -s "${TAILSCALE_ROOT}/tailscale-install.service" /etc/systemd/system/tailscale-install.service
-
-        systemctl daemon-reload
-        systemctl enable tailscale-install.service
     fi
 
     if [ ! -L "/etc/systemd/system/tailscale-install.timer" ]; then
@@ -102,11 +99,12 @@ _tailscale_install() {
 
         echo "Installing auto-update timer to ensure that Tailscale is kept installed and up to date."
         ln -s "${TAILSCALE_ROOT}/tailscale-install.timer" /etc/systemd/system/tailscale-install.timer
-
-        systemctl daemon-reload
-        systemctl enable --now tailscale-install.timer
     fi
 
+    systemctl daemon-reload
+    systemctl enable tailscale-install.service
+    systemctl enable --now tailscale-install.timer
+
     echo "Installation complete, run '$0 start' to start Tailscale"
 }
 
@@ -116,4 +114,7 @@ _tailscale_uninstall() {
 
     systemctl disable tailscale-install.service || true
     rm -f /lib/systemd/system/tailscale-install.service || true
+
+    systemctl disable tailscale-install.timer || true
+    rm -f /lib/systemd/system/tailscale-install.timer || true
 }