Updates to user/group determination after recent changes to v2 branch

docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/30-ownership.sh

@@ -0,0 +1,22 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash
+
+set -e
+
+log_info 'Setting ownership ...'
+
+# root
+chown root /tmp/nginx
+
+# npmuser
+chown -R "$PUID:$PGID" /data \
+	/run/nginx \
+	/tmp/nginx \
+	/var/cache/nginx \
+	/var/lib/nginx \
+	/var/log/nginx
+
+# Don't chown entire /etc/nginx folder as this causes crashes on some systems
+chown -R "$PUID:$PGID" /etc/nginx/nginx \
+	/etc/nginx/nginx.conf \
+	/etc/nginx/conf.d