diff --git a/check_docker_stats b/check_docker_stats
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+#!/bin/bash
+# ======================================================================
+#
+# Check DOCKER INFOS
+#
+# requirements:
+# - docker
+# - sudo permissions on docker command
+# - jq
+# - bc
+#
+# ----------------------------------------------------------------------
+# Cli docs:
+# https://docs.docker.com/engine/reference/commandline/docker/
+# ----------------------------------------------------------------------
+# 2024-01-26 v0.1 <axel.hahn@unibe.ch> init
+# ======================================================================
+
+
+. $(dirname $0)/inc_pluginfunctions
+. $(dirname $0)/inc_dockerfunctions.sh
+
+self_APPVERSION=1.0
+
+# ----------------------------------------------------------------------
+# FUNCTIONS
+# ----------------------------------------------------------------------
+
+
+# show help
+function _showHelp(){
+ local _self=$( basename $0 )
+ cat <<EOH
+$( ph.showImlHelpHeader )
+
+Show resources of running docker instances.
+
+This check provides performance data except on mode "all".
+
+USAGE:
+ $_self [OPTIONS]
+
+OPTIONS:
+
+ General:
+ -h, --help this help
+ -d, --debug Debug; Flag: show all docker system infos
+
+ Connect to docker:
+ -p, --path Custom directory for docker binary
+ -t, --target Custom docker target; value for DOCKER_HOST
+ Needed only if Docker does not run on a unix socket or
+ multiple users run a rootless docker daemon.
+
+ mode:
+ -m, --mode MODE Mode what kind of information to show.
+ The output of container list is sorted by the maximum
+ value first.
+
+ all default; This view is unsorted.
+ This check has no performance data.
+
+ cpu CPU usage total of all containers
+ mem Memory max usage of most consuming container
+
+ memtotal sum of memory usage
+ netio sum of netio of all containers IN and OUT
+ blockio sum of blockio of all containers IN and OUT
+
+EXAMPLES:
+ $_self
+ Show stats of all containers
+
+ $_self -p /usr/bin
+ Show stats of all containers. The docker binary will be searched in
+ given path first - then in all other dirs of \$PATH
+
+ $_self -d
+ Show stats of all containers and json with all docker system infos.
+
+ $_self -m cpu
+ Show cpu usage total of all containers. The container list is sorted
+ by cpu usage. The most consuming container is on top.
+
+EOH
+}
+
+# ----------------------------------------------------------------------
+# MAIN
+# ----------------------------------------------------------------------
+
+bOptDebug=0
+sMode="all"
+while [[ "$#" -gt 0 ]]; do case $1 in
+ -h|--help) _showHelp; exit 0;;
+ -d|--debug) bOptDebug=1; shift;;
+ -p|--path) PATH="$2:$PATH"; shift; shift;;
+ -m|--mode) sMode="$2"; shift; shift;;
+ -t|--target) export DOCKER_HOST="$2"; shift; shift;;
+ *) echo "ERROR: Unknown parameter: $1"; showHelp; exit 1;
+esac; done
+
+sLabel="Docker stats"
+
+case "$sMode" in
+ "cpu") sLabel="Docker CPU usage total of all containers: %s percent"; sUnit="1"; sumkey="CPUPerc"; sColumns=".Container, .${sumkey}, .Name" ;;
+ "mem") sLabel="Docker Memory max usage in most consuming container: %s percent"; sUnit="1"; maxkey="MemPerc"; sColumns=".Container, .${maxkey}, .MemUsage, .Name" ;;
+ "netio") sLabel="Docker Network I/O of all containers: %s MB IN .. %s MB OUT"; sUnit="M"; sumkey="NetIO"; f2=1; sColumns=".Container, .${sumkey}, .Name" ;;
+ "memtotal") sLabel="Docker Memory usage of all containers: %s MB"; sUnit="M"; sumkey="MemUsage";f2=0; sColumns=".Container, .${sumkey}, .Name" ;;
+ "blockio") sLabel="Docker Network I/O of all containers: %s MB IN .. %s MB OUT"; sUnit="M"; sumkey="BlockIO"; f2=1; sColumns=".Container, .${sumkey}, .Name" ;;
+ "all") ;;
+ *) ph.setStatus critical
+ echo "ERROR: mode [$sMode] is unknown. Use -h to get help."
+ ph.exit
+esac
+
+test -z "$sColumns" && sColumns=".Container, .CPUPerc, .MemUsage, .MemPerc, .NetIO, .PIDs, .Name"
+
+
+ph.require "docker"
+ph.require "jq"
+ph.require "bc"
+
+_detectDockerenv
+
+# --- get stats data
+
+data=$( sudo -n --preserve-env docker stats --no-stream --format '{{ json . }}' )
+_detectDockererror "$data"
+
+
+# --- checks to detect maximum
+
+if [ -n "${maxkey}" ]; then
+ iMax=0
+ sMax=$( echo "$data" | tr -d '%' | jq -r ".${maxkey}" | sort -hr | head -1 | sed "s#^\.#0#" )
+ iMax=$( ph.toUnit "$sMax" "1" 0 )
+ ph.perfadd "${sMode}-max" "$iMax" "" "" 0 "100"
+ sLabel=$( printf "${sLabel}" ${sMax} )
+fi
+
+
+# --- checks with sum of a value
+
+if [ -n "${sumkey}" ]; then
+ sum=0
+ # split 2 value field - get the 1st one. example: "81.1kB / 1.66MB" --> "81.1k"
+ for myval in $( echo "$data" | tr -d '%' | jq -r ".${sumkey}" | cut -f 1 -d " " | tr -d "B" )
+ do
+ valuniq=$( ph.toUnit "$myval" "" )
+ sum=$( bc <<< "$valuniq + ${sum}" )
+ done
+ test "$sUnit" = "1" && sumhr=$( ph.toUnit "$sum" "1" 0 )
+ test "$sUnit" = "M" && sumhr=$( ph.toUnit "$sum" "M" 3 )
+
+ # --- checks with IN and OUT
+
+ if [ "$f2" = "1" ]; then
+ sum2=0
+ # split 2 value field - get the 2nd one. example: "81.1kB / 1.66MB" --> "1.66M"
+ for myval in $( echo "$data" | tr -d '%' | jq -r ".${sumkey}" | cut -f 3 -d " " | tr -d "B" )
+ do
+ valuniq=$( ph.toUnit "$myval" "" )
+ sum2=$( bc <<< "$valuniq + ${sum2}" )
+ done
+ ph.perfadd "${sMode}-1" "$sum" "" ""
+ ph.perfadd "${sMode}-2" "$sum2" "" ""
+ sum2hr=$( ph.toUnit "$sum2" "M" 3 )
+
+ sLabel=$( printf "${sLabel}" ${sumhr} ${sum2hr} )
+
+ else
+ ph.perfadd "${sMode}-sum" "$sum" "" ""
+ sLabel=$( printf "${sLabel}" ${sumhr} )
+ fi
+fi
+
+
+# --- output
+line="------------------------------------------------------------------------------------------"
+
+ph.status "$sLabel"
+
+if [ "$sMode" = "all" ]; then
+ echo "ID CPU % MEM USAGE / LIMIT MEM % NET I/O PIDs Name"
+ echo "$line"
+ jq -r "[$sColumns] | @tsv" <<< "$data"
+fi
+
+if [ -n "${maxkey}" ]; then
+ echo "ID ${maxkey}"
+ echo "$line"
+ jq -r "[$sColumns] | @tsv" <<< "$data" | sort -k +2 -h -r
+fi
+
+if [ -n "${sumkey}" ]; then
+ echo "ID ${sumkey}"
+ echo "$line"
+ jq -r "[$sColumns] | @tsv" <<< "$data" | sort -k +2 -h -r
+fi
+
+echo
+
+# if -d was given then show debug infos too
+test $bOptDebug -eq 1 && ( echo; echo "DEBUG: full docker system infos as json"; echo "$data" | jq ; _debugInfos)
+
+ph.exit
+
+
+# ----------------------------------------------------------------------