Ensure user defined FTL_PID_FILE and FTL_PORT_FILE dirs are created on startup

Signed-off-by: Christian König <ckoenig@posteo.de>

advanced/Templates/pihole-FTL.service

@@ -30,8 +30,8 @@ start() {
   else
     # Touch files to ensure they exist (create if non-existing, preserve if existing)
     mkdir -pm 0755 /run/pihole /var/log/pihole
-    [ ! -f "${FTL_PID_FILE}" ] && install -m 644 -o pihole -g pihole /dev/null "${FTL_PID_FILE}"
-    [ ! -f "${FTL_PORT_FILE}" ] && install -m 644 -o pihole -g pihole /dev/null "${FTL_PORT_FILE}"
+    [ ! -f "${FTL_PID_FILE}" ] && install -D -m 644 -o pihole -g pihole /dev/null "${FTL_PID_FILE}"
+    [ ! -f "${FTL_PORT_FILE}" ] && install -D -m 644 -o pihole -g pihole /dev/null "${FTL_PORT_FILE}"
     [ ! -f /var/log/pihole/FTL.log ] && install -m 644 -o pihole -g pihole /dev/null /var/log/pihole/FTL.log
     [ ! -f /var/log/pihole/pihole.log ] && install -m 640 -o pihole -g pihole /dev/null /var/log/pihole/pihole.log
     [ ! -f /etc/pihole/dhcp.leases ] && install -m 644 -o pihole -g pihole /dev/null /etc/pihole/dhcp.leases