nginx-proxy-manager/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/10-npmuser.sh

#!/command/with-contenv bash
# shellcheck shell=bash

set -e

if [ "$PUID" = '0' ]; then
	log_info 'Skipping npmuser configuration'
else
	log_info 'Configuring npmuser ...'
	groupmod -g 1000 users || exit 1

	if id -u npmuser; then
		# user already exists
		usermod -u "$PUID" npmuser || exit 1
	else
		# Add npmuser user
		useradd -u "$PUID" -U -d /tmp/npmuserhome -s /bin/false npmuser || exit 1
	fi

	usermod -G users npmuser || exit 1
	groupmod -o -g "$PGID" npmuser || exit 1
	# Home for npmuser
	mkdir -p /tmp/npmuserhome
	chown -R "$PUID:$PGID" /tmp/npmuserhome
fi