* readd this for php < 7.2
* fixes for websupport-sk/pecl-memcache#26 and websupport-sk/pecl-memcache#26
* updated readme
* workaround for redundancy test
added explicit ob_flush for session_id changes to work
the session redundancy acts weird when the session is closed and reopened
during one request, suspecting locks but will need to investigate further
* build from my fork for this repo
* add ob_flush to allow session_id change
* this might have worked in distant past no idea how though
* Update Dockerfile
back to original
Tomas Srnka