Enable Opcache

Summary

In regards to the development branch...

Opcache is installed but not enabled. In php.ini (in the base image), zend_extension = opcache is explicitly commented out. The Dockerfile for this project adjusts the config but it is never enabled.

Steps to reproduce

• Build/run the image
• Check configuration for opcache in the container
  • docker exec drupal /usr/local/bin/php -i | grep opcache
• Look for opcache.enable

What is the current bug behavior?

Opcache is not enabled. There are very few results (opcache.enable is not apparent)

What is the expected correct behavior?

Several results including:

opcache.enable => On => On

Relevant logs and/or screenshots

opcache_current.txt

opcache_fix.txt

Possible fixes

Dockerfile:17

RUN { \
    echo 'zend_extension=opcache'; \
    echo '[opcache]'; \
    echo 'opcache.memory_consumption=128'; \
    echo 'opcache.interned_strings_buffer=8'; \
    echo 'opcache.max_accelerated_files=4000'; \
    echo 'opcache.revalidate_freq=60'; \
    } > /usr/local/etc/php/conf.d/opcache-recommended.ini

• zend_extension=opcache enables the module
• [opcache] is a label for the module
• opcache.fast_shutdown=1 is no longer available - https://www.php.net/manual/en/opcache.configuration.php#ini.opcache.fast-shutdown

Definition of Done

If the Drupal image has Opcache enabled by default.