work by @ptudor on the Debian scripts

debian/control

@@ -2,7 +2,7 @@ Source: galmon
 Section: net
 Priority: optional
 Maintainer: Patrick Tudor <debian@ptudor.net>
-Build-Depends: debhelper (>=11~)
+Build-Depends: debhelper (>=11~), help2man, libzstd-dev, adduser
 Standards-Version: 4.3.0
 Homepage: https://github.com/ahupowerdns/galmon/
 

debian/galmon.galmon-upgrade.service

@@ -6,6 +6,7 @@ StartLimitIntervalSec=0
 ConditionPathExists=/etc/default/galmon
 
 [Service]
+Environment=DEBIAN_FRONTEND=noninteractive
 Type=simple
 Restart=no
 ExecStartPre=+apt-get update

debian/galmon.postinst

@@ -17,7 +17,9 @@ if getent passwd ubxtool > /dev/null ; then
   echo "galmon: ubxtool user exists, skipping"
 else
   echo "galmon: creating ubxtool system user"
-  adduser --system ubxtool && adduser ubxtool ubxtool
+  adduser --system ubxtool --no-create-home --home /run/ubxtool
+  echo "galmon: adding ubxtool user to ubxtool group"
+  adduser ubxtool ubxtool
   echo "galmon: adding ubxtool user to dialout group"
   adduser ubxtool dialout
 fi
@@ -41,7 +43,7 @@ print_help_text() {
   echo "Example: cp /etc/default/galmon /etc/default/ubxtool-ttyACM0"
   echo "Example: vi /etc/default/ubxtool-ttyACM0"
   echo "Example: systemctl enable --now ubxtool@ttyACM0"
-  echo "Example: systemctl enable --now galmon-upgrade.timer"
+  echo "Example: (beta testing) systemctl enable --now galmon-upgrade.timer"
 }
 
 setup_user