20after4 / T253673-opcache

Trying to reproduce an opcache corruption bug, see https://phabricator.wikimedia.org/T253673

T253673

build & run the container:

make build
make run

get opcache info:

curl http://localhost:8080/mon/index.php?/opcache-info

siege the server

siege -f urls.txt -c 10 --log=siege.log

https://phabricator.wikimedia.org/T253673