fix help;

check_dockercontainer_top

@@ -13,13 +13,14 @@
 # https://docs.docker.com/engine/reference/commandline/docker/
 # ----------------------------------------------------------------------
 # 2024-01-26  v1.0  <axel.hahn@unibe.ch>      init
+# 2024-01-29  v1.1  <axel.hahn@unibe.ch>      fix help;
 # ======================================================================
 
 
 . $(dirname $0)/inc_pluginfunctions
 . $(dirname $0)/inc_dockerfunctions.sh
 
-self_APPVERSION=1.0
+self_APPVERSION=1.1
 
 # ----------------------------------------------------------------------
 # FUNCTIONS
@@ -48,8 +49,12 @@ USAGE:
   $_self [OPTIONS]
 
 OPTIONS:
+
+  General:
   -h, --help        this help
-  -d, --debug       Debug; Flag: show all docker system infos
+  -d, --debug       Debug; Flag: show docker env values.
+
+  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
@@ -91,7 +96,7 @@ while [[ "$#" -gt 0 ]]; do case $1 in
                       fi
                       shift; shift;;
     -t|--target)      export DOCKER_HOST="$2"; shift; shift;;
-    *) echo "ERROR: Unknown parameter: $1"; showHelp; exit 1;
+    *) echo "ERROR: Unknown parameter: $1"; _showHelp; exit 1;
 esac; done
 
 ph.require "docker"
@@ -108,7 +113,7 @@ _detectDockererror "$data"
 
 out=$(
 echo "$data" | while read -r line; do
-    id=$( echo "$line" | jq -r ".ID")
+    id=$(   echo "$line" | jq -r ".ID")
     name=$( echo "$line" | jq -r ".Names")
 
     pslist=$( sudo -n --preserve-env docker top "$id" "-o user,pid,pcpu,pmem,command" 2>/dev/null )
@@ -121,7 +126,7 @@ done
 
 typeset -i iContainers; iContainers=$( echo "$data" | wc -l )
 typeset -i iLines;      iLines=$( echo "$out" | wc -l )
-typeset -i iProcesses;  iProcesses=iLines-iContainers*2
+typeset -i iProcesses;  iProcesses=$(( iLines-iContainers*2 ))
 
 # --- output
 

inc_dockerfunctions.sh

@@ -43,9 +43,11 @@ function _getString(){
 function _detectDockerenv(){
     local dockeruid=
     if [ -z "$DOCKER_HOST" ]; then
-        _is_docker_detected=1
         dockeruid=$( ps -ef | grep containerd | grep -Eo "/run/user/([0-9]*)/" | head -1 | cut -f 4 -d '/' )
-        test -n "$dockeruid" && export DOCKER_HOST="unix:///run/user/$dockeruid/docker.sock"
+        if [ -n "$dockeruid" ]; then
+            _is_docker_detected=1
+            export DOCKER_HOST="unix:///run/user/$dockeruid/docker.sock"
+        fi
         # Don't abort - it is allowed that the variable DOCKER_HOST is missing
     fi
     if grep "/run/user/[0-9]*" <<< "$DOCKER_HOST" >/dev/null; then