[BUG] Healthcheck not working while using auth typ http_auth

[xoxys]

Describe the bug
While using the auth type http_auth the docker healthcheck using 'http://localhost/i/' | grep -q 'jsonVars' does not work:

PHP Warning:  readfile(http://127.0.0.1:8080/i/): failed to open stream: HTTP request failed! HTTP/1.1 403 Forbidden
 in Command line code on line 1

Expected behavior
A health endpoint that works without authentication and just reflects if the server is operational or not.

[Alkarex]

Related #3161