For everyone who uses docker in their web projects on php, the question arises of building a container for your project. Someone uses Apache-based containers with php as a module, but I, like most developers, prefer to build my container for a php-fpm-based application.
The main problem is that [the original php-fpm] (https://hub.docker.com/_/php) does not contain many php modules for full work, as well as auxiliary software, which is regularly required.
The situation is aggravated if it is necessary to support several projects on the same stack. This is just my case, as I support and refine [usually more than 10k projects] (/ projects.html) on the Yii2 framework. They all use approximately the same stack: [Yii2 framework] (https://www.yiiframework.com/), php-fpm, nginx, memcached and the mysql or postgres database.
So, in the base container with php-fpm, you need to add the following php libraries:
In addition to these libraries, I put additional software:
Git ended up on this list because it is needed for composer. I install zip, since I use the [Yii2 backup module] (https://floor12.net/packages/yii2-module-backup.html), which uses zip for compression. [FFmpeg] (https://www.ffmpeg.org/) I install so that the [file handling module for Yii2] (https://floor12.net/packages/yii2-module-files.html) converts video files. I install console clients for mysql and postgresql for universality, since my applications work with both databases, and in some cases with two at the same time.
As a result, I get a universal and quite flexible php-container, which has everything you need to develop, launch a project in production or create a final image based on it.
For the convenience of supporting the two php branches that I need, I store them in different branches of the repository. I build them through gitlab CI and store them in the public domain in the same place, in [gitlab registry] (https://gitlab.com/floor12/images/container_registry/) .
After the development phase, when it is necessary to assemble the project into a separate image for launching in production, I usually create it based on the images mentioned above. Copy to container:
Then I start the installation of dependencies through composer install --no-scripts --prefer-dist --optimize-autoloader. But at the same time, in the final assembly I also have packages from dev-dependencies ([codeception] (https://codeception.com/), debug and other components necessary for testing). Since when building applications in CI, I am testing a container that will go directly to production, it needs dev dependencies in it. After the tests, they can be removed from the container. I will talk about this in other articles.
composer install --no-scripts --prefer-dist --optimize-autoloader
If you want to slightly reduce the size of the final production image, it is possible to build it not on the basis of these images, but edit their original [dockerfile] (https://gitlab.com/floor12/images/-/blob/basic74/Dockerfile-basic) under yourself, removing the extra software from there. In addition, you can remove all unnecessary software from the container even after the application is built. But I do not use this approach. It’s more convenient for me that the images do not differ from each other for the convenience of supporting projects: sometimes you need to connect to the container and already have in it all the necessary tools for debugging and useful utilities.
At the time of this writing, the image is being built using the dockerfile below. However, its current version can be found in the [repository on hitlab] (https://gitlab.com/floor12/images).
RUN apt-get update
RUN apt-get install -y \
RUN echo 'deb http://apt.postgresql.org/pub/repos/apt/ jessie-pgdg main 9.5' > /etc/apt/sources.list.d/pgdg.list
RUN apt-key adv --keyserver ha.pool.sks-keyservers.net --recv-keys B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8
RUN apt-get update && apt-get install -y postgresql-client-9.5
RUN docker-php-ext-configure gd \
RUN docker-php-ext-install gd
RUN docker-php-ext-configure imap \
RUN docker-php-ext-install imap
RUN docker-php-ext-configure zip
RUN docker-php-ext-install zip
RUN docker-php-ext-configure intl
RUN docker-php-ext-install intl
RUN docker-php-ext-install pdo_mysql
RUN docker-php-ext-install pdo_pgsql
RUN docker-php-ext-install exif
RUN docker-php-ext-install fileinfo
RUN pecl install xdebug
RUN curl --silent --show-error https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
RUN pecl install memcached
RUN echo extension=memcached.so >> /usr/local/etc/php/conf.d/memcached.ini
ENV COMPOSER_ALLOW_SUPERUSER 1