README

The class that builds dockerfile.

The package is used for specific things. Some options are not tested. Some things are done ineffectively. Using this package is recommended for nobody.

Hierarchy of classes

• DockerfileBuileder - common builder
  • DockerfilePHPBuilder - added some PHP specific features

Example

use axy\docker\dockerfile\builder\DockerfilePHPBuilder;

$builder = new DockerfilePHPBuilder('8.0', 'fpm', false);

$builder->labels['author'] = 'Me';
$builder->env['var'] = 'value';
$builder->user = '1000:1000';
$builder->cmd = 'php -m';

$builder->workdir('/var/www/app');
$builder->copy('file.php', 'index.php', '1000:1000');
$builder->packages(['curl', 'libpng-dev', 'libonig-dev', 'zip'], 'Install CURL etc');
$builder->extensions = ['bcmath', 'mbstring', 'pdo_mysql'];
$builder->pecl = ['xdebug'];
$builder->ini['error_reporting'] = 'E_ALL';
$builder->ini['post_max_size'] = '128M';

echo $builder->build();

Result:

FROM php:8.0-fpm

LABEL author="Me"

ENV var=value

WORKDIR /var/www/app

COPY --chown=1000:1000 file.php index.php

# Install CURL etc
RUN apt-get update && apt-get install -y \
    curl \
    libpng-dev \
    libonig-dev \
    zip

RUN docker-php-ext-install \
    bcmath \
    mbstring \
    pdo_mysql \
&& pecl install \
    xdebug \
&& docker-php-ext-enable \
    xdebug \
&& echo "error_reporting=E_ALL" >> /usr/local/etc/php/conf.d/docker.ini \
&& echo "post_max_size=128M" >> /usr/local/etc/php/conf.d/docker.ini \
&& curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer

RUN rm -rf /var/lib/apt/lists/*

CMD php -m

USER 1000:1000

DockerfileBuilder

• __construct(public string $image, public bool $isAlpine = true)
  • image - the image name
  • isAlpine - use alpine distributive (see "Package Manager" below)

Properties

• string|array|null $cmd - CMD instruction (NULL - no CMD)
• string|array|null $entrypoint - see CMD
• string[] $labels - LABELs (key => value)
• string[] $env - environment variables (key => value)
• string[] $directives - directives (key => value)
• string[] $args - ARGs (key => value)
• ?string $syntax - syntax directive separately
• ?string $escape - escape directive separately
• string[] $volume - list of volumes
• string[] $expose - list of expose ports
• bool $isPackagesCacheDisabled - see "Package Manager" below

Methods

All these methods add one instruction to the dockerfile. The argument $comment add comment line before the instruction.

• instruction(string|string[] $instruction, ?string $comment)
  • $instruction - an instruction as string or multiline (joined by "")
• run(string|string[] $commands, ?string $comment)
  • $commands - a command for RUN instructions or a list of commands (joined by "&&")
• copy(string|string[] $src, string $dest, ?string $chown) - COPY instruction
• add(string|string[] $src, string $dest, ?string $chown) - ADD instruction
• workdir(string $dir, ?string $comment = null) - WORKDIR instruction
• packages(string[] $packages, ?string $comment)
  • $packages - a list of packages for installation
  • See "Package Manager" below

Build

• build(bool $pretty = true) - returns the dockerfile content
  • $pretty - if FALSE, empty lines and comments will be deleted

Package Manager

• Alpine uses "apk"
• Not alpine uses "apt-get"
• Before install "update" will be performed
• With multiple call packages(), "update" will be performed only for the first
• If $isPackagesCacheDisabled is TRUE (by default)
  • alpine - install will be executed with --no-cache
  • other - the cache directory will be deleted at the end

DockerfilePHPBuilder

• bool $isComposerRequired - if TRUE (by default) the composer will be installed globally
• string[] $extensions - the list of names of extensions that required for installation
• string[] $pecl - the list of names of extensions that installed via pecl
• string[] $ini - the list of php.ini settings (key => value)