Correctly identify process status in debug script on docker (#5011)

advanced/Scripts/piholeDebug.sh

@@ -925,12 +925,23 @@ process_status(){
         else
             # Otherwise, use the service command and mock the output of `systemctl is-active`
             local status_of_process
+
+            # If DOCKER_VERSION is set, the output is slightly different (s6 init system on Docker)
+            if [ -n "${DOCKER_VERSION}" ]; then
+                if service "${i}" status | grep -E '^up' &> /dev/null; then
+                    status_of_process="active"
+                else
+                    status_of_process="inactive"
+                fi
+            else
+            # non-Docker system
                 if service "${i}" status | grep -E 'is\srunning' &> /dev/null; then
                     status_of_process="active"
                 else
                     status_of_process="inactive"
                 fi
             fi
+        fi
         # and print it out to the user
         if [[ "${status_of_process}" == "active" ]]; then
             # If it's active, show it in green