all docker references cleared, fixes

check.sh

@@ -0,0 +1,41 @@
+#!/bin/bash
+#
+# check if container services are running
+
+UNITS="/var/containers/systemd"
+FAILED=""
+
+check_service() {
+    local service=$1
+
+    systemctl is-active --user --machine=container@ $service >/dev/null
+    if [ $? -ne 0 ]; then
+        FAILED="$FAILED $service"
+    fi
+}
+
+check() {
+    local type=$1
+    for i in $UNITS/$type/*.socket; do
+        check_service $(basename $i)
+    done
+
+    for i in $UNITS/$type/*.container; do
+        check_service $(basename $i .container).service 
+    done
+}
+
+check user
+check system
+
+if [ -z "$FAILED" ]; then
+    echo "OK  All services are running"
+    exit 0
+else
+    echo "#" >&2
+    echo "# ERROR  some services are not running:" >&2
+    echo "#" >&2
+    echo "#       $FAILED" >&2
+    echo "#" >&2
+    exit 1
+fi