Add systemd user creation

contrib/deb/generate.sh

@@ -39,6 +39,11 @@ mkdir -p /tmp/$PKGNAME/
 mkdir -p /tmp/$PKGNAME/debian/
 mkdir -p /tmp/$PKGNAME/usr/bin/
 mkdir -p /tmp/$PKGNAME/etc/systemd/system/
+mkdir -p /tmp/$PKGNAME/usr/lib/sysusers.d/
+
+cat > /tmp/$PKGNAME/usr/lib/sysusers.d/alfis.tmpfiles << EOF
+u alfis - "alfis user"
+EOF
 
 cat > /tmp/$PKGNAME/debian/changelog << EOF
 Please see https://github.com/Revertron/Alfis/
@@ -125,4 +130,4 @@ ar -r $PKGFILE \
   /tmp/$PKGNAME/control.tar.gz \
   /tmp/$PKGNAME/data.tar.gz
 
-rm -rf /tmp/$PKGNAME
+rm -rf /tmp/$PKGNAME