Dockerfile

# This dockerfile is based on Kévin Duglas project https://github.com/dunglas/symfony-docker

# the different stages of this Dockerfile are meant to be built into separate images
# https://docs.docker.com/develop/develop-images/multistage-build/#stop-at-a-specific-build-stage
# https://docs.docker.com/compose/compose-file/#target


# https://docs.docker.com/engine/reference/builder/#understand-how-arg-and-from-interact
ARG PHP_VERSION=8.1
ARG CADDY_VERSION=2

# Prod image
FROM php:${PHP_VERSION}-fpm-alpine AS app_php

# Allow to use development versions of Symfony
ARG STABILITY="stable"
ENV STABILITY ${STABILITY}

# Allow to select Symfony version
ARG SYMFONY_VERSION=""
ENV SYMFONY_VERSION ${SYMFONY_VERSION}

ENV APP_ENV=prod

WORKDIR /srv/app

# persistent / runtime deps
RUN apk add --no-cache \
		acl \
		fcgi \
		file \
		gettext \
		git \
	;

RUN set -eux; \
	apk add --no-cache --virtual .build-deps \
		$PHPIZE_DEPS \
		icu-data-full \
		icu-dev \
		libzip-dev \
		zlib-dev \
	; \
	\
	docker-php-ext-configure zip; \
	docker-php-ext-install -j$(nproc) \
		intl \
		zip \
	; \
	pecl install \
		apcu \
	; \
	pecl clear-cache; \
	docker-php-ext-enable \
		apcu \
		opcache \
	; \
	\
	runDeps="$( \
		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local/lib/php/extensions \
			| tr ',' '\n' \
			| sort -u \
			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
	)"; \
	apk add --no-cache --virtual .app-phpexts-rundeps $runDeps; \
	\
	apk del .build-deps

###> recipes ###
###< recipes ###

RUN mv "$PHP_INI_DIR/php.ini-production" "$PHP_INI_DIR/php.ini"
COPY docker/php/conf.d/app.ini $PHP_INI_DIR/conf.d/
COPY docker/php/conf.d/app.prod.ini $PHP_INI_DIR/conf.d/

COPY docker/php/php-fpm.d/zz-docker.conf /usr/local/etc/php-fpm.d/zz-docker.conf
RUN mkdir -p /var/run/php

COPY docker/php/docker-healthcheck.sh /usr/local/bin/docker-healthcheck
RUN chmod +x /usr/local/bin/docker-healthcheck

HEALTHCHECK --interval=10s --timeout=3s --retries=3 CMD ["docker-healthcheck"]

COPY docker/php/docker-entrypoint.sh /usr/local/bin/docker-entrypoint
RUN chmod +x /usr/local/bin/docker-entrypoint

ENTRYPOINT ["docker-entrypoint"]
CMD ["php-fpm"]

# https://getcomposer.org/doc/03-cli.md#composer-allow-superuser
ENV COMPOSER_ALLOW_SUPERUSER=1
ENV PATH="${PATH}:/root/.composer/vendor/bin"

COPY --from=composer:2 /usr/bin/composer /usr/bin/composer

# prevent the reinstallation of vendors at every changes in the source code
COPY composer.* symfony.* ./
RUN set -eux; \
    if [ -f composer.json ]; then \
		composer install --prefer-dist --no-dev --no-autoloader --no-scripts --no-progress; \
		composer clear-cache; \
    fi

# copy sources
COPY . .
RUN rm -Rf docker/

RUN set -eux; \
	mkdir -p var/cache var/log; \
    if [ -f composer.json ]; then \
		composer dump-autoload --classmap-authoritative --no-dev; \
		composer dump-env prod; \
		composer run-script --no-dev post-install-cmd; \
		chmod +x bin/console; sync; \
    fi

# Dev image
FROM app_php AS app_php_dev

ENV APP_ENV=dev XDEBUG_MODE=off
VOLUME /srv/app/var/

RUN rm $PHP_INI_DIR/conf.d/app.prod.ini; \
	mv "$PHP_INI_DIR/php.ini" "$PHP_INI_DIR/php.ini-production"; \
	mv "$PHP_INI_DIR/php.ini-development" "$PHP_INI_DIR/php.ini"

COPY docker/php/conf.d/app.dev.ini $PHP_INI_DIR/conf.d/

RUN set -eux; \
	apk add --no-cache --virtual .build-deps $PHPIZE_DEPS; \
	pecl install xdebug; \
	docker-php-ext-enable xdebug; \
	apk del .build-deps

RUN rm -f .env.local.php

# Build Caddy with the Mercure and Vulcain modules
FROM caddy:${CADDY_VERSION}-builder-alpine AS app_caddy_builder

RUN xcaddy build \
	--with github.com/dunglas/mercure \
	--with github.com/dunglas/mercure/caddy \
	--with github.com/dunglas/vulcain \
	--with github.com/dunglas/vulcain/caddy

# Caddy image
FROM caddy:${CADDY_VERSION} AS app_caddy

WORKDIR /srv/app

COPY --from=app_caddy_builder /usr/bin/caddy /usr/bin/caddy
COPY --from=app_php /srv/app/public public/
COPY docker/caddy/Caddyfile /etc/caddy/Caddyfile