Docker PHP-FPM no access to /proc/self/fd/2


I’m trying to start a standard php-fpm docker image in CircleCI to run my tests.
Here is the error I’m getting in the container when running php-fpm command :

[19-Aug-2016 13:41:51] ERROR: failed to open error_log (/proc/self/fd/2): Permission denied (13)
[19-Aug-2016 13:41:51] ERROR: failed to post process the configuration
[19-Aug-2016 13:41:51] ERROR: FPM initialization failed

Even when I set PHP parameter error_log to /dev/null I’m getting the error.