Docker PHP image per Symfony 6.x application

Ho scritto e testato questa immagine, tenendomi solo lo stretto necessario, eliminando quante più cose possibili ed utilizzando una versione alpine di php8.x

Chiaramente è solo un punto di partenza per applicazioni basate su Symfony 6.x.

FROM php:8.1.5-fpm-alpine
# Install other dependencies

RUN apk add --no-cache unzip \
	libxml2-dev \
	nano \
	icu-dev \
	bash \
	util-linux \
    g++ \
    git \
    zip \
    libzip-dev

RUN apk add --no-cache  libpq-dev;

RUN apk add --no-cache  php8-dev;

RUN docker-php-ext-install \
	pdo \
	intl \
	soap \
	mysqli \
	pdo_mysql \
    opcache

RUN docker-php-ext-configure zip \
    && docker-php-ext-install zip

# set recommended PHP.ini settings
# see https://secure.php.net/manual/en/opcache.installation.php
RUN docker-php-ext-enable opcache; \
	{ \
		echo "opcache.preload=/var/www/html/config/preload.php"; \
		echo "opcache.preload_user=www-data"; \
		echo 'opcache.memory_consumption=256'; \
		echo 'opcache.max_accelerated_files=20000'; \
		echo 'opcache.validate_timestamps=0'; \
		echo 'opcache.enable=1'; \
		echo 'opcache.jit_buffer_size=100M'; \
		echo 'opcache.jit=1255'; \
		echo "realpath_cache_size=4096K"; \
		echo "realpath_cache_ttl=600"; \
	} > /usr/local/etc/php/conf.d/opcache-recommended.ini

RUN { \
    echo "upload_max_filesize=128M;"; \
	echo "post_max_size=256M;"; \
	echo "memory_limit = 512M;"; \
	echo "max_execution_time=300;"; \
	echo "session.cookie_httponly=1"; \
    echo "short_open_tag=Off"; \
} > /usr/local/etc/php/conf.d/uploads.ini


# install gd library
RUN apk add --update --no-cache freetype libpng libjpeg-turbo freetype-dev libpng-dev libjpeg-turbo-dev libwebp-dev

RUN docker-php-ext-configure gd \
    --with-freetype \
    --with-jpeg \
    --with-webp \
    NPROC=$(grep -c ^processor /proc/cpuinfo 2>/dev/null || 1)

RUN docker-php-ext-install -j$(nproc) gd \
    && apk del --no-cache freetype-dev libpng-dev libjpeg-turbo-dev

# install composer
RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer

# Install symfony-cli
RUN apk add --no-cache bash
RUN curl -1sLf 'https://dl.cloudsmith.io/public/symfony/stable/setup.alpine.sh' | bash
RUN apk add symfony-cli

# post installation
RUN cp /usr/local/etc/php/php.ini-production /usr/local/etc/php/php.ini

WORKDIR /var/www/html

EXPOSE 9000

CMD ["php-fpm"]

Per buildare l’immagine eseguire il comando:

$ docker build -t symfony .

Successivamente eseguire immagine con il comando:

$ docker run --name symfony symfony