diff --git a/.version b/.version
index c6436a85..5f4f65c8 100644
--- a/.version
+++ b/.version
@@ -1 +1 @@
-2.10.2
+2.10.3
diff --git a/README.md b/README.md
index eefa11eb..95d6551a 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 <p align="center">
 	<img src="https://nginxproxymanager.com/github.png">
 	<br><br>
-	<img src="https://img.shields.io/badge/version-2.10.2-green.svg?style=for-the-badge">
+	<img src="https://img.shields.io/badge/version-2.10.3-green.svg?style=for-the-badge">
 	<a href="https://hub.docker.com/repository/docker/jc21/nginx-proxy-manager">
 		<img src="https://img.shields.io/docker/stars/jc21/nginx-proxy-manager.svg?style=for-the-badge">
 	</a>
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 564f838a..b1cd31a2 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -10,9 +10,13 @@ ARG BUILD_VERSION
 ARG BUILD_COMMIT
 ARG BUILD_DATE
 
+# See: https://github.com/just-containers/s6-overlay/blob/master/README.md
 ENV SUPPRESS_NO_CONFIG_WARNING=1 \
-	S6_FIX_ATTRS_HIDDEN=1 \
 	S6_BEHAVIOUR_IF_STAGE2_FAILS=1 \
+	S6_CMD_WAIT_FOR_SERVICES_MAXTIME=0 \
+	S6_FIX_ATTRS_HIDDEN=1 \
+	S6_KILL_FINISH_MAXTIME=10000 \
+	S6_VERBOSITY=1 \
 	NODE_ENV=production \
 	NPM_BUILD_VERSION="${BUILD_VERSION}" \
 	NPM_BUILD_COMMIT="${BUILD_COMMIT}" \
diff --git a/docker/dev/Dockerfile b/docker/dev/Dockerfile
index 833f1003..749ac343 100644
--- a/docker/dev/Dockerfile
+++ b/docker/dev/Dockerfile
@@ -1,9 +1,13 @@
 FROM jc21/nginx-full:certbot-node
 LABEL maintainer="Jamie Curnow <jc@jc21.com>"
 
-ENV S6_LOGGING=0 \
-	SUPPRESS_NO_CONFIG_WARNING=1 \
-	S6_FIX_ATTRS_HIDDEN=1
+# See: https://github.com/just-containers/s6-overlay/blob/master/README.md
+ENV SUPPRESS_NO_CONFIG_WARNING=1 \
+	S6_BEHAVIOUR_IF_STAGE2_FAILS=1 \
+	S6_CMD_WAIT_FOR_SERVICES_MAXTIME=0 \
+	S6_FIX_ATTRS_HIDDEN=1 \
+	S6_KILL_FINISH_MAXTIME=10000 \
+	S6_VERBOSITY=2
 
 RUN echo "fs.file-max = 65535" > /etc/sysctl.conf \
 	&& apt-get update \
diff --git a/docker/docker-compose.ci.yml b/docker/docker-compose.ci.yml
index 9f4edc00..209d2d0e 100644
--- a/docker/docker-compose.ci.yml
+++ b/docker/docker-compose.ci.yml
@@ -35,6 +35,7 @@ services:
       DB_SQLITE_FILE: '/data/mydb.sqlite'
       PUID: 1000
       PGID: 1000
+      DISABLE_IPV6: 'true'
     volumes:
       - npm_data:/data
     expose:
diff --git a/docker/rootfs/bin/common.sh b/docker/rootfs/bin/common.sh
index 0bc6468d..913dd3e1 100644
--- a/docker/rootfs/bin/common.sh
+++ b/docker/rootfs/bin/common.sh
@@ -12,6 +12,11 @@ export CYAN BLUE YELLOW RED RESET
 PUID=${PUID:-0}
 PGID=${PGID:-0}
 
+NPMUSER=npm
+NPMGROUP=npm
+NPMHOME=/tmp/npmuserhome
+export NPMUSER NPMGROUP NPMHOME
+
 if [[ "$PUID" -ne '0' ]] && [ "$PGID" = '0' ]; then
 	# set group id to same as user id,
 	# the user probably forgot to specify the group id and
@@ -40,3 +45,10 @@ log_fatal () {
 	/run/s6/basedir/bin/halt
 	exit 1
 }
+
+# param $1: group_name
+get_group_id () {
+	if [ "${1:-}" != '' ]; then
+		getent group "$1" | cut -d: -f3
+	fi
+}
diff --git a/docker/rootfs/etc/nginx/nginx.conf b/docker/rootfs/etc/nginx/nginx.conf
index c2ee97cc..82618337 100644
--- a/docker/rootfs/etc/nginx/nginx.conf
+++ b/docker/rootfs/etc/nginx/nginx.conf
@@ -1,7 +1,7 @@
 # run nginx in foreground
 daemon off;
 pid /run/nginx/nginx.pid;
-user npmuser;
+user npm;
 
 # Set number of worker processes automatically based on number of CPU cores.
 worker_processes auto;
diff --git a/docker/rootfs/etc/s6-overlay/s6-rc.d/backend/run b/docker/rootfs/etc/s6-overlay/s6-rc.d/backend/run
index e8ffa17c..19746169 100755
--- a/docker/rootfs/etc/s6-overlay/s6-rc.d/backend/run
+++ b/docker/rootfs/etc/s6-overlay/s6-rc.d/backend/run
@@ -10,12 +10,12 @@ cd /app || exit 1
 log_info 'Starting backend ...'
 
 if [ "${DEVELOPMENT:-}" = 'true' ]; then
-	s6-setuidgid npmuser yarn install
-	exec s6-setuidgid npmuser bash -c 'export HOME=/tmp/npmuserhome;node --max_old_space_size=250 --abort_on_uncaught_exception node_modules/nodemon/bin/nodemon.js'
+	s6-setuidgid "$PUID:$PGID" yarn install
+	exec s6-setuidgid "$PUID:$PGID" bash -c "export HOME=$NPMHOME;node --max_old_space_size=250 --abort_on_uncaught_exception node_modules/nodemon/bin/nodemon.js"
 else
 	while :
 	do
-		s6-setuidgid npmuser bash -c 'export HOME=/tmp/npmuserhome;node --abort_on_uncaught_exception --max_old_space_size=250 index.js'
+		s6-setuidgid "$PUID:$PGID" bash -c "export HOME=$NPMHOME;node --abort_on_uncaught_exception --max_old_space_size=250 index.js"
 		sleep 1
 	done
 fi
diff --git a/docker/rootfs/etc/s6-overlay/s6-rc.d/frontend/run b/docker/rootfs/etc/s6-overlay/s6-rc.d/frontend/run
index 1181c53e..e62f749c 100755
--- a/docker/rootfs/etc/s6-overlay/s6-rc.d/frontend/run
+++ b/docker/rootfs/etc/s6-overlay/s6-rc.d/frontend/run
@@ -8,14 +8,14 @@ set -e
 if [ "$DEVELOPMENT" = 'true' ]; then
 	. /bin/common.sh
 	cd /app/frontend || exit 1
-	HOME=/tmp/npmuserhome
+	HOME=$NPMHOME
 	export HOME
 	mkdir -p /app/frontend/dist
 	chown -R "$PUID:$PGID" /app/frontend/dist
 
 	log_info 'Starting frontend ...'
-	s6-setuidgid npmuser yarn install
-	exec s6-setuidgid npmuser yarn watch
+	s6-setuidgid "$PUID:$PGID" yarn install
+	exec s6-setuidgid "$PUID:$PGID" yarn watch
 else
 	exit 0
 fi
diff --git a/docker/rootfs/etc/s6-overlay/s6-rc.d/nginx/run b/docker/rootfs/etc/s6-overlay/s6-rc.d/nginx/run
index fa8c1fc5..b1bed7a4 100755
--- a/docker/rootfs/etc/s6-overlay/s6-rc.d/nginx/run
+++ b/docker/rootfs/etc/s6-overlay/s6-rc.d/nginx/run
@@ -6,4 +6,4 @@ set -e
 . /bin/common.sh
 
 log_info 'Starting nginx ...'
-exec s6-setuidgid npmuser nginx
+exec s6-setuidgid "$PUID:$PGID" nginx
diff --git a/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/00-all.sh b/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/00-all.sh
index 1d5899e4..82fbefb1 100755
--- a/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/00-all.sh
+++ b/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/00-all.sh
@@ -9,7 +9,11 @@ if [ "$(id -u)" != "0" ]; then
 	log_fatal "This docker container must be run as root, do not specify a user.\nYou can specify PUID and PGID env vars to run processes as that user and group after initialization."
 fi
 
-. /etc/s6-overlay/s6-rc.d/prepare/10-npmuser.sh
+if [ "$DEBUG" = "true" ]; then
+	set -x
+fi
+
+. /etc/s6-overlay/s6-rc.d/prepare/10-usergroup.sh
 . /etc/s6-overlay/s6-rc.d/prepare/20-paths.sh
 . /etc/s6-overlay/s6-rc.d/prepare/30-ownership.sh
 . /etc/s6-overlay/s6-rc.d/prepare/40-dynamic.sh
diff --git a/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/10-npmuser.sh b/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/10-npmuser.sh
deleted file mode 100755
index c5cf5435..00000000
--- a/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/10-npmuser.sh
+++ /dev/null
@@ -1,20 +0,0 @@
-#!/command/with-contenv bash
-# shellcheck shell=bash
-
-set -e
-
-log_info 'Configuring npmuser ...'
-
-if id -u npmuser; then
-	# user already exists
-	usermod -u "$PUID" npmuser || exit 1
-else
-	# Add npmuser user
-	useradd -o -u "$PUID" -U -d /tmp/npmuserhome -s /bin/false npmuser || exit 1
-fi
-
-usermod -G "$PGID" npmuser || exit 1
-groupmod -o -g "$PGID" npmuser || exit 1
-# Home for npmuser
-mkdir -p /tmp/npmuserhome
-chown -R "$PUID:$PGID" /tmp/npmuserhome
diff --git a/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/10-usergroup.sh b/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/10-usergroup.sh
new file mode 100755
index 00000000..ea100193
--- /dev/null
+++ b/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/10-usergroup.sh
@@ -0,0 +1,40 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash
+
+set -e
+
+log_info "Configuring $NPMUSER user ..."
+
+if id -u "$NPMUSER" 2>/dev/null; then
+	# user already exists
+	usermod -u "$PUID" "$NPMUSER"
+else
+	# Add user
+	useradd -o -u "$PUID" -U -d "$NPMHOME" -s /bin/false "$NPMUSER"
+fi
+
+log_info "Configuring $NPMGROUP group ..."
+if [ "$(get_group_id "$NPMGROUP")" = '' ]; then
+	# Add group. This will not set the id properly if it's already taken
+	groupadd -f -g "$PGID" "$NPMGROUP"
+else
+	groupmod -o -g "$PGID" "$NPMGROUP"
+fi
+
+# Set the group ID and check it
+groupmod -o -g "$PGID" "$NPMGROUP"
+if [ "$(get_group_id "$NPMGROUP")" != "$PGID" ]; then
+	echo "ERROR: Unable to set group id properly"
+	exit 1
+fi
+
+# Set the group against the user and check it
+usermod -G "$PGID" "$NPMGROUP"
+if [ "$(id -g "$NPMUSER")" != "$PGID" ] ; then
+	echo "ERROR: Unable to set group against the user properly"
+	exit 1
+fi
+
+# Home for user
+mkdir -p "$NPMHOME"
+chown -R "$PUID:$PGID" "$NPMHOME"
diff --git a/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/30-ownership.sh b/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/30-ownership.sh
index 684166e1..817c2c8e 100755
--- a/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/30-ownership.sh
+++ b/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/30-ownership.sh
@@ -8,17 +8,17 @@ log_info 'Setting ownership ...'
 # root
 chown root /tmp/nginx
 
-# npmuser
-chown -R "$PUID:$PGID" /data \
-	/etc/letsencrypt \
-	/run/nginx \
-	/tmp/nginx \
-	/var/cache/nginx \
-	/var/lib/logrotate \
-	/var/lib/nginx \
-	/var/log/nginx
+# npm user and group
+chown -R "$PUID:$PGID" /data
+chown -R "$PUID:$PGID" /etc/letsencrypt
+chown -R "$PUID:$PGID" /run/nginx
+chown -R "$PUID:$PGID" /tmp/nginx
+chown -R "$PUID:$PGID" /var/cache/nginx
+chown -R "$PUID:$PGID" /var/lib/logrotate
+chown -R "$PUID:$PGID" /var/lib/nginx
+chown -R "$PUID:$PGID" /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
+chown -R "$PUID:$PGID" /etc/nginx/nginx
+chown -R "$PUID:$PGID" /etc/nginx/nginx.conf
+chown -R "$PUID:$PGID" /etc/nginx/conf.d
diff --git a/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/50-ipv6.sh b/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/50-ipv6.sh
index bc27eb14..76e9a651 100755
--- a/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/50-ipv6.sh
+++ b/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/50-ipv6.sh
@@ -1,8 +1,11 @@
-#!/bin/bash
+#!/command/with-contenv bash
+# shellcheck shell=bash
 
 # This command reads the `DISABLE_IPV6` env var and will either enable
 # or disable ipv6 in all nginx configs based on this setting.
 
+set -e
+
 log_info 'IPv6 ...'
 
 # Lowercase
@@ -28,7 +31,7 @@ process_folder () {
 		sed -E -i "$SED_REGEX" "$FILE"
 	done
 
-	# ensure the files are still owned by the npmuser
+	# ensure the files are still owned by the npm user
 	chown -R "$PUID:$PGID" "$1"
 }
 
diff --git a/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/90-banner.sh b/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/90-banner.sh
index 7991ddf4..48ba6392 100755
--- a/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/90-banner.sh
+++ b/docker/rootfs/etc/s6-overlay/s6-rc.d/prepare/90-banner.sh
@@ -2,6 +2,7 @@
 # shellcheck shell=bash
 
 set -e
+set +x
 
 echo "
 -------------------------------------
@@ -11,7 +12,7 @@ echo "
 | |\  |  __/| |  | |
 |_| \_|_|   |_|  |_|
 -------------------------------------
-User ID:  $PUID
-Group ID: $PGID
+User:  $NPMUSER PUID:$PUID ID:$(id -u "$NPMUSER") GROUP:$(id -g "$NPMUSER")
+Group: $NPMGROUP PGID:$PGID ID:$(get_group_id "$NPMGROUP")
 -------------------------------------
 "
diff --git a/docker/scripts/install-s6 b/docker/scripts/install-s6
index 5a5a9c9c..0681aed9 100755
--- a/docker/scripts/install-s6
+++ b/docker/scripts/install-s6
@@ -8,7 +8,7 @@ BLUE='\E[1;34m'
 GREEN='\E[1;32m'
 RESET='\E[0m'
 
-S6_OVERLAY_VERSION=3.1.4.1
+S6_OVERLAY_VERSION=3.1.5.0
 TARGETPLATFORM=${1:unspecified}
 
 # Determine the correct binary file for the architecture given