fix(netbootxyz): bump PUID/PGID to 1000/1000

nbxyz image init fails to create its 'nbxyz' user for Unraid's
default 99/100 ('chown: unknown user/group nbxyz'), so nginx
crash-loops into FATAL state. 1000/1000 confirmed working upstream.

Refs https://github.com/netbootxyz/docker-netbootxyz/issues/96

network/compose.yaml

@@ -155,11 +155,11 @@ services:
       - "HOST_HOSTNAME=Atlas"
       - "HOST_CONTAINERNAME=netbootxyz"
       - "MENU_VERSION=2.0.84"
-      - "PGID=100"
+      - "PGID=1000"
       - "HOST_OS=Unraid"
       - "PORT_RANGE=30000:30010"
       - "SUBFOLDER=/"
-      - "PUID=99"
+      - "PUID=1000"
       - "UMASK=022"
       - "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
       - "TFTPD_OPTS="