note on protection mode

README.md

@@ -3,3 +3,7 @@
 This addon enables a zabbix agent2 for the hassio instance.
 
 You obviously need a zabbix server for it to be meaningful.
+
+## Docker access
+
+If you need the agent to access the underlying docker, you need to disable the "Protection mode" switch and restart the container.

rootfs/etc/cont-init.d/require_unprotected.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/with-contenv bashio
+
+# Instead of enforcing this requirement, we let the user choose
+# to access docker, we need to disable "protection mode"
+
+#bashio::require.unprotected