Stop the madness! Run as a user (not root) (#6718)

* Stop the madness! Run as a user (not root)

* Trigger fsdir migration for < 2.6.9

---------

Co-authored-by: Ben Meadors <benmmeadors@gmail.com>

debian/meshtasticd.postrm

@@ -0,0 +1,41 @@
+#!/bin/sh
+# postrm script for meshtasticd
+#
+# see: dh_installdeb(1)
+
+set -e
+
+# summary of how this script can be called:
+#        * <postrm> `remove'
+#        * <postrm> `purge'
+#        * <old-postrm> `upgrade' <new-version>
+#        * <new-postrm> `failed-upgrade' <old-version>
+#        * <new-postrm> `abort-install'
+#        * <new-postrm> `abort-install' <old-version>
+#        * <new-postrm> `abort-upgrade' <old-version>
+#        * <disappearer's-postrm> `disappear' <overwriter>
+#          <overwriter-version>
+# for details, see http://www.debian.org/doc/debian-policy/ or
+# the debian-policy package
+
+
+case "$1" in
+    purge|remove|upgrade|failed-upgrade|abort-install|abort-upgrade|disappear)
+      # Only remove /var/lib/meshtasticd on purge
+      if [ "${1}" = "purge" ] ; then
+          rm -rf /var/lib/meshtasticd
+      fi
+    ;;
+
+    *)
+        echo "postrm called with unknown argument \`$1'" >&2
+        exit 1
+    ;;
+esac
+
+# dh_installdeb will replace this with shell code automatically
+# generated by other debhelper scripts.
+
+#DEBHELPER#
+
+exit 0