Dockerfile

FROM wordpress:5.6.0-php7.4-fpm

# Delete recommended OPCache settings from https://secure.php.net/manual/en/opcache.installation.php
RUN rm -f /usr/local/etc/php/conf.d/opcache-recommended.ini

# OPcache defaults
ENV PHP_OPCACHE_ENABLE="1"
ENV PHP_OPCACHE_MEMORY_CONSUMPTION="128"
ENV PHP_OPCACHE_MAX_ACCELERATED_FILES="10000"
ENV PHP_OPCACHE_REVALIDATE_FREQUENCY="0"
ENV PHP_OPCACHE_VALIDATE_TIMESTAMPS="0"

# Install opcache and add the configuration file
# RUN docker-php-ext-install opcache
ADD opcache.ini "$PHP_INI_DIR/conf.d/opcache.ini"

# PHP-FPM defaults
ENV PHP_FPM_PM="dynamic"
ENV PHP_FPM_MAX_CHILDREN="5"
ENV PHP_FPM_START_SERVERS="2"
ENV PHP_FPM_MIN_SPARE_SERVERS="1"
ENV PHP_FPM_MAX_SPARE_SERVERS="2"
ENV PHP_FPM_MAX_REQUESTS="1000"

# Copy the PHP-FPM configuration file
COPY ./www.conf /usr/local/etc/php-fpm.d/www.conf