Fix CircleCI/APCu build issue

Author: arun251

circle.yml

@@ -7,8 +7,8 @@ machine:
 dependencies:
  pre:
  - yes '' | pecl install -f apcu-4.0.10
- - echo "extension=apcu.so" | sudo tee -a /opt/circleci/php/$(phpenv global)/etc/php.ini
- - echo "apc.enable_cli = 1" | sudo tee -a /opt/circleci/php/$(phpenv global)/etc/php.ini
+ - echo "extension=apcu.so" >> $(php-config --prefix)/etc/conf.d/apcu.ini
+ - echo "apc.enable_cli = 1" >> $(php-config --prefix)/etc/conf.d/apcu.ini
  - docker pull php
  - docker pull nyanpass/php5.5