Simplify the check

Instead of making some if statements for more than one case, how about this approach?

Get the path and UUID of the Docker Home Dir
Check that UUID against the parent paths of the Docker Home Dir
If the UUID matches a parent path, we are not on our own volume.

tests/1_host_configuration.sh

@@ -18,27 +18,34 @@ check_1_1() {
 
   totalChecks=$((totalChecks + 1))
 
-  if [[ "$(docker info -f '{{ .SecurityOptions }}')" =~ .*userns.* ]]; then
-    if mountpoint -q -- "$(dirname "$(docker info -f '{{ .DockerRootDir }}')")" >/dev/null 2>&1; then
-      pass "$check_1_1"
-      resulttestjson "PASS"
-      currentScore=$((currentScore + 1))
+  DOCKER_HOME="$(docker info -f '{{ .DockerRootDir }}')"
+  DOCKER_MNT="$(findmnt -fnT $DOCKER_HOME|awk '{print $1}')"
+  MNT_UUID="$(findmnt -o UUID -fnT $DOCKER_HOME)"
+  DEPTH="$(echo $DOCKER_MNT | grep -o / | wc -l)"
+  UUID_ARRAY=()
+
+  for ((i=$DEPTH-1;i>0;i--)); do
+    EXPANSION="$(printf %${i}s | sed 's/ /\/\*/g')"
+    UUID_ARRAY[$i]="$(findmnt -o UUID -fnT ${DOCKER_MNT%$EXPANSION})"
+  done
+
+  for i in "${UUID_ARRAY[@]}"; do
+    if [ "$MNT_UUID" == "$i" ]; then
+      WARN=1
+      break 2
     else
+      continue
+    fi
+  done
+  if [[ $WARN == 1 ]]; then
       warn "$check_1_1"
       resulttestjson "WARN"
       currentScore=$((currentScore - 1))
-    fi
-  else
-    if mountpoint -q -- "$(docker info -f '{{ .DockerRootDir }}')" >/dev/null 2>&1; then
+    else
       pass "$check_1_1"
       resulttestjson "PASS"
       currentScore=$((currentScore + 1))
-    else
-      warn "$check_1_1"
-      resulttestjson "WARN"
-      currentScore=$((currentScore - 1))
     fi
-  fi
 }
 
 # 1.2