add --target option

check_docker_info

@@ -6,6 +6,7 @@
 # requirements:
 # - docker
 # - sudo permissions on docker command
+# - jq
 #
 # ----------------------------------------------------------------------
 # Cli docs:
@@ -15,13 +16,14 @@
 # 2024-01-22  v1.1  <axel.hahn@unibe.ch>      detect DOCKER; use sudo; add debug
 # 2024-01-23  v1.2  <axel.hahn@unibe.ch>      Show a list of docker containers; add path
 # 2024-01-24  v1.3  <axel.hahn@unibe.ch>      remove emoji icons; handle "null" in license info; show rootless or not
+# 2024-01-29  v1.4  <axel.hahn@unibe.ch>      add --target option
 # ======================================================================
 
 
 . $(dirname $0)/inc_pluginfunctions
 . $(dirname $0)/inc_dockerfunctions.sh
 
-self_APPVERSION=1.3
+self_APPVERSION=1.4
 
 # ----------------------------------------------------------------------
 # FUNCTIONS
@@ -50,11 +52,20 @@ USAGE:
   $_self [OPTIONS]
 
 OPTIONS:
+
+  General:
   -h, --help        this help
-  -c, --containers  Flag: Show containers (slow)
-  -e, --errors      Flag: Show containers on error only (slow)
   -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.
+
+  Flags:
+  -c, --containers  Flag: Show containers (slow)
+  -e, --errors      Flag: Show containers on error only (slow)
 
 EXAMPLES:
   $_self
@@ -95,7 +106,8 @@ while [[ "$#" -gt 0 ]]; do case $1 in
                         PATH="$2:$PATH"; 
                       fi
                       shift; shift;;
-    *) echo "ERROR: Unknown parameter: $1"; showHelp; exit 1;
+    -t|--target)      export DOCKER_HOST="$2"; shift; shift;;
+    *) echo "ERROR: Unknown parameter: $1"; _showHelp; exit 1;
 esac; done
 
 
@@ -107,7 +119,7 @@ _detectDockerenv
 # --- get data
 
 data=$( sudo -n --preserve-env docker system info --format '{{ json . }}' )
-_detectDockererror "$data"
+_detectDockererror "$data" 1
 
 typeset -i iCTotal; 
 iCTotal=$(  _getString "$data" ".Containers" )