PHP-FPM Docker Images

Docker container to install and run PHP-FPM.

Project Goal

Out of the box, multi-version, fully loaded PHP-FPM docker images, that can support all my PHP projects. I work with WordPress & Laravel. The images are no light weight. The aim is to support maximum number of features out of the box, that could be easily turn ON/OFF with environment settings.

Supported branches and respective Dockerfile links

• 8.2 Dockerfile
• 8.1 Dockerfile
• 8.0 Dockerfile
• 7.4 Dockerfile
• 7.3 Dockerfile
• 7.2 Dockerfile
• 7.1 Dockerfile
• 5.6 Dockerfile

What is PHP-FPM ?

PHP-FPM (FastCGI Process Manager) is an alternative FastCGI implementation for PHP.

Environment variables

Use following environment variables to configure docker container php process manager during container boot up:

system user

PHP_UID=1000
PHP_GID=1000
PHP_HOME=/app
PHP_USER=php-fpm

will run create a system user called php-fpm with UID:GUID 1000:1000 and home directory /app, which then can be referenced in your php-fpm manager pool configuration file.

php.ini configuration

PHP_INI_PATH=/path/to/php.ini

will include specified php.ini configuration during php-fpm manager start. It allows to use a wildcard in case you would like to include several .ini configuration files.

php-fpm pool configurations

PHP_POOL_PATH=/path/to/pool.conf

will include specified pool.conf configuration during php-fpm manager start. It allows to use a wildcard in case you would like to include several .conf configuration files. ATTENTION: default www.conf pool configuration will be loaded, unless you specify path to your custom www.conf.

boot scripts

PHP_BOOT_SCRIPTS=/path/to/*.sh

will run scripts or a single script from specified path during container boot, before php-fpm manager starts up. Useful in cases when you want to include several pools configurations, where each pool uses a different system user (shared hosting). In those cases you would need to create each system user before php-fom manager starts up. PHP_BOOT_SCRIPTS could be use to point to a bash script that will create those system users.

crontabs

PHP_CRONTABS_PATH=/path/to/cronttab_scripts

will install a crontab defined in /path/to/cronttab_scripts and start crontab daemon inside container.

example Laravel crontab

#
# Laravel task scheduler
#
# ATTENTION:
# crontab sh shell requires:
# - a full path to php cli interpreter
# - current dir change to laravel artisan
# - an empty line is required at the end of this file for a valid cron file

* * * * * php-cli   cd /app && /usr/local/bin/php artisan schedule:run

NewRelic APM

NEWRELIC_LICENSE=license_string

will turn on NewRelic extension to monitor PHP application performance.

SendGrid

starting from latest 7.3 container the Sendgrid login & password credentials are deprecated in favor of API key.

deprecated:

SMTP_LOGIN=sendgrid_login
SMTP_PASSWORD=sendgrid_password

in favor of API key:

SENDGRID_API_KEY=api_key_string

will update default email routing via SendGrid. Google Cloud blocks SMTP port 25 by default, so this could be useful solution to set up an alternative email routing before php-fpm manager starts up.

TEST_EMAIL=email@domain.com

if set, on container boot the test script will send an email using PHP mail function to given recipient address.

session handler

to support Redis or Memcached PHP session handler.

PHP_SESSION_HANDLER=php_session_handler
PHP_SESSION_PATH=php_session_path

will update default PHP session handler. Useful in cluster environments, to allow shared PHP sessions between cluster instances.

[Example Redis session](https://www.digitalocean.com/community/tutorials/how-to-set-up-a-redis-server-as-a-session-handler-for-php-on-ubuntu-14-04)

PHP_SESSION_HANDLER=redis
PHP_SESSION_PATH=tcp://redis.host:6379

This will set php.ini global session handler to use Redis server accessible at redis.host DNS endpoint name and port 6379.

[Example Memcached session](https://www.digitalocean.com/community/tutorials/how-to-share-php-sessions-on-multiple-memcached-servers-on-ubuntu-14-04)

PHP_SESSION_HANDLER=memcached
PHP_SESSION_PATH=memcached.host:11211

This will set php.ini global session handler to use Memcached server accessible at memcached.host DNS endpoint name and port 11211.

Supervisord

SUPERVISORD_PATH=/path/to/supervisord.conf

Allows to control and monitor multiple processes running inside the container. Example use case: ensure that there are minimum 8 simultaniously run Laravel Queues available at any time to process scheduled tasks.

Note that if you use supervisord the container boot script will create a /healthcheck file to monitor supervisord main process, which can be used to monitor container health. This example configuration for docker-compose.yaml will ensure that container does not exit after boot and redirect supervisord logs into stdout.

    command: [ "tail", '-f', '/var/log/supervisor/supervisord.log' ]
    healthcheck:
      test: /healthcheck
      retries: 3
      timeout: 5s
      interval: 5s

php access log (on|off)

PHP_ACCESS_LOG=off

turns on|off php access log to docker container stdout.

php error log (on|off)

PHP_ERROR_LOG=on

turns on|off php error log to docker container stdout.

Installed extensions

• apc
• apcu
• bcmath
• bz2
• calendar
• Core
• ctype
• curl
• date
• dba
• dom
• ds
• enchant
• exif
• fileinfo
• filter
• ftp
• gd
• gettext
• gmp
• hash
• iconv
• igbinary
• imagick
• imap
• interbase
• intl
• json
• ldap
• libxml
• mbstring
• memcache
• memcached
• mongodb
• msgpack
• mysqli
• mysqlnd
• newrelic
• openssl
• pcntl
• pcre
• PDO
• pdo_dblib
• pdo_mysql
• pdo_pgsql
• pdo_sqlite
• pdo_sqlsrv
• pgsql
• Phar
• posix
• pspell
• readline
• recode
• redis
• Reflection
• session
• shmop
• SimpleXML
• soap
• sockets
• sodium
• SPL
• sqlite3
• ssh2
• standard
• sysvmsg
• sysvsem
• sysvshm
• test
• tidy
• tokenizer
• wddx
• xdebug
• xml
• xmlreader
• xmlrpc
• xmlwriter
• xsl
• Zend OPcache
• zip
• zlib

Installed Zend Modules

• Xdebug
• Zend OPcache

Pull latest image

docker pull crunchgeek/php-fpm:7.2

Running PHP apps

Running image

Run the PHP-FPM image, mounting a directory from your host.

docker run -it --name php-fpm -v /path/to/your/app:/app crunchgeek/php-fpm:7.2 php script.php

or using Docker Compose:

version: '3'
services:
  php-fpm:
    container_name: php-fpm
    image: crunchgeek/php-fpm:7.3
    entrypoint: php index.php
    volumes:
      - /path/to/your/app:/app

Running as server

docker run --rm --name php-fpm -v /path/to/your/app:/app -p 8000:8000 crunchgeek/php-fpm:7.2 php -S 0.0.0.0:8000 /app/index.php

Logging

docker logs php-fpm

Listing installed extensions

docker run --rm -it crunchgeek/php-fpm:7.2 php -m

Release Notes

PHP-FPM 7.4

Extensions that failed to build from 7.3 to 7.4:

• mhash (Implemented RFC: The hash extension is now an integral part of PHP and cannot be disabled)
• interbase (Unbundled the InterBase extension and moved it to PECL)
• recode (Unbundled the recode extension)
• wddx (Deprecated and unbundled the WDDX extension)
• docker-php-ext-configure gd --with-png only PNG