php:7.4.21-apache-buster with --enable-debug and debug symbols

Dockerfile

#
# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
#
# PLEASE DO NOT EDIT IT DIRECTLY.
#

FROM debian:buster-slim

# prevent Debian's PHP packages from being installed
# https://github.com/docker-library/php/pull/542
RUN set -eux; \
	{ \
		echo 'Package: php*'; \
		echo 'Pin: release *'; \
		echo 'Pin-Priority: -1'; \
	} > /etc/apt/preferences.d/no-debian-php

# dependencies required for running "phpize"
# (see persistent deps below)
ENV PHPIZE_DEPS \
		autoconf \
		dpkg-dev \
		file \
		g++ \
		gcc \
		libc-dev \
		make \
		pkg-config \
		re2c

# persistent / runtime deps
RUN set -eux; \
	apt-get update; \
	apt-get install -y --no-install-recommends \
		$PHPIZE_DEPS \
		ca-certificates \
		curl \
		xz-utils \
		gdb \
	; \
	rm -rf /var/lib/apt/lists/*

ENV PHP_INI_DIR /usr/local/etc/php
RUN set -eux; \
	mkdir -p "$PHP_INI_DIR/conf.d"; \
# allow running as an arbitrary user (https://github.com/docker-library/php/issues/743)
	[ ! -d /var/www/html ]; \
	mkdir -p /var/www/html; \
	chown www-data:www-data /var/www/html; \
	chmod 777 /var/www/html

ENV APACHE_CONFDIR /etc/apache2
ENV APACHE_ENVVARS $APACHE_CONFDIR/envvars

RUN set -eux; \
	apt-get update; \
	apt-get install -y --no-install-recommends apache2; \
	rm -rf /var/lib/apt/lists/*; \
	\
# generically convert lines like
#   export APACHE_RUN_USER=www-data
# into
#   : ${APACHE_RUN_USER:=www-data}
#   export APACHE_RUN_USER
# so that they can be overridden at runtime ("-e APACHE_RUN_USER=...")
	sed -ri 's/^export ([^=]+)=(.*)$/: ${\1:=\2}\nexport \1/' "$APACHE_ENVVARS"; \
	\
# setup directories and permissions
	. "$APACHE_ENVVARS"; \
	for dir in \
		"$APACHE_LOCK_DIR" \
		"$APACHE_RUN_DIR" \
		"$APACHE_LOG_DIR" \
	; do \
		rm -rvf "$dir"; \
		mkdir -p "$dir"; \
		chown "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$dir"; \
# allow running as an arbitrary user (https://github.com/docker-library/php/issues/743)
		chmod 777 "$dir"; \
	done; \
	\
# delete the "index.html" that installing Apache drops in here
	rm -rvf /var/www/html/*; \
	\
# logs should go to stdout / stderr
	ln -sfT /dev/stderr "$APACHE_LOG_DIR/error.log"; \
	ln -sfT /dev/stdout "$APACHE_LOG_DIR/access.log"; \
	ln -sfT /dev/stdout "$APACHE_LOG_DIR/other_vhosts_access.log"; \
	chown -R --no-dereference "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$APACHE_LOG_DIR"

# Apache + PHP requires preforking Apache for best results
RUN a2dismod mpm_event && a2enmod mpm_prefork

# PHP files should be handled by PHP, and should be preferred over any other file type
RUN { \
		echo '<FilesMatch \.php$>'; \
		echo '\tSetHandler application/x-httpd-php'; \
		echo '</FilesMatch>'; \
		echo; \
		echo 'DirectoryIndex disabled'; \
		echo 'DirectoryIndex index.php index.html'; \
		echo; \
		echo '<Directory /var/www/>'; \
		echo '\tOptions -Indexes'; \
		echo '\tAllowOverride All'; \
		echo '</Directory>'; \
	} | tee "$APACHE_CONFDIR/conf-available/docker-php.conf" \
	&& a2enconf docker-php

ENV PHP_EXTRA_BUILD_DEPS apache2-dev
ENV PHP_EXTRA_CONFIGURE_ARGS --with-apxs2 --disable-cgi --enable-debug

# Apply stack smash protection to functions using local buffers and alloca()
# Make PHP's main executable position-independent (improves ASLR security mechanism, and has no performance impact on x86_64)
# Enable optimization (-O2)
# Enable linker optimization (this sorts the hash buckets to improve cache locality, and is non-default)
# https://github.com/docker-library/php/issues/272
# -D_LARGEFILE_SOURCE and -D_FILE_OFFSET_BITS=64 (https://www.php.net/manual/en/intro.filesystem.php)
ENV PHP_CFLAGS="-fstack-protector-strong -fpic -fpie -O0 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -ggdb3 -g"
ENV PHP_CPPFLAGS="$PHP_CFLAGS"
ENV PHP_LDFLAGS="-Wl,-O0 -pie"

ENV GPG_KEYS 42670A7FE4D0441C8E4632349E4FDC074A4EF02D 5A52880781F755608BF815FC910DEB46F53EA312

ENV PHP_VERSION 7.4.21
ENV PHP_URL="https://www.php.net/distributions/php-7.4.21.tar.xz" PHP_ASC_URL="https://www.php.net/distributions/php-7.4.21.tar.xz.asc"
ENV PHP_SHA256="cf43384a7806241bc2ff22022619baa4abb9710f12ec1656d0173de992e32a90"

RUN set -eux; \
	\
	savedAptMark="$(apt-mark showmanual)"; \
	apt-get update; \
	apt-get install -y --no-install-recommends gnupg dirmngr; \
	rm -rf /var/lib/apt/lists/*; \
	\
	mkdir -p /usr/src; \
	cd /usr/src; \
	\
	curl -fsSL -o php.tar.xz "$PHP_URL"; \
	\
	if [ -n "$PHP_SHA256" ]; then \
		echo "$PHP_SHA256 *php.tar.xz" | sha256sum -c -; \
	fi; \
	\
	if [ -n "$PHP_ASC_URL" ]; then \
		curl -fsSL -o php.tar.xz.asc "$PHP_ASC_URL"; \
		export GNUPGHOME="$(mktemp -d)"; \
		for key in $GPG_KEYS; do \
			gpg --batch --keyserver keyserver.ubuntu.com --recv-keys "$key"; \
		done; \
		gpg --batch --verify php.tar.xz.asc php.tar.xz; \
		gpgconf --kill all; \
		rm -rf "$GNUPGHOME"; \
	fi; \
	\
	apt-mark auto '.*' > /dev/null; \
	apt-mark manual $savedAptMark > /dev/null; \
	apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false

COPY docker-php-source /usr/local/bin/

RUN set -eux; \
	\
	savedAptMark="$(apt-mark showmanual)"; \
	apt-get update; \
	apt-get install -y --no-install-recommends \
		libargon2-dev \
		libcurl4-openssl-dev \
		libedit-dev \
		libonig-dev \
		libsodium-dev \
		libsqlite3-dev \
		libssl-dev \
		libxml2-dev \
		zlib1g-dev \
		${PHP_EXTRA_BUILD_DEPS:-} \
	; \
	rm -rf /var/lib/apt/lists/*; \
	\
	export \
		CFLAGS="$PHP_CFLAGS" \
		CPPFLAGS="$PHP_CPPFLAGS" \
		LDFLAGS="$PHP_LDFLAGS" \
	; \
	docker-php-source extract; \
	cd /usr/src/php; \
	gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
	debMultiarch="$(dpkg-architecture --query DEB_BUILD_MULTIARCH)"; \
# https://bugs.php.net/bug.php?id=74125
	if [ ! -d /usr/include/curl ]; then \
		ln -sT "/usr/include/$debMultiarch/curl" /usr/local/include/curl; \
	fi; \
	./configure \
		--build="$gnuArch" \
		--with-config-file-path="$PHP_INI_DIR" \
		--with-config-file-scan-dir="$PHP_INI_DIR/conf.d" \
		\
# make sure invalid --configure-flags are fatal errors instead of just warnings
		--enable-option-checking=fatal \
		\
# https://github.com/docker-library/php/issues/439
		--with-mhash \
		\
# https://github.com/docker-library/php/issues/822
		--with-pic \
		\
# --enable-ftp is included here because ftp_ssl_connect() needs ftp to be compiled statically (see https://github.com/docker-library/php/issues/236)
		--enable-ftp \
# --enable-mbstring is included here because otherwise there's no way to get pecl to use it properly (see https://github.com/docker-library/php/issues/195)
		--enable-mbstring \
# --enable-mysqlnd is included here because it's harder to compile after the fact than extensions are (since it's a plugin for several extensions, not an extension in itself)
		--enable-mysqlnd \
# https://wiki.php.net/rfc/argon2_password_hash (7.2+)
		--with-password-argon2 \
# https://wiki.php.net/rfc/libsodium
		--with-sodium=shared \
# always build against system sqlite3 (https://github.com/php/php-src/commit/6083a387a81dbbd66d6316a3a12a63f06d5f7109)
		--with-pdo-sqlite=/usr \
		--with-sqlite3=/usr \
		\
		--with-curl \
		--with-libedit \
		--with-openssl \
		--with-zlib \
		\
# in PHP 7.4+, the pecl/pear installers are officially deprecated (requiring an explicit "--with-pear")
		--with-pear \
		\
# bundled pcre does not support JIT on s390x
# https://manpages.debian.org/stretch/libpcre3-dev/pcrejit.3.en.html#AVAILABILITY_OF_JIT_SUPPORT
		$(test "$gnuArch" = 's390x-linux-gnu' && echo '--without-pcre-jit') \
		--with-libdir="lib/$debMultiarch" \
		\
		${PHP_EXTRA_CONFIGURE_ARGS:-} \
	; \
	make -j "$(nproc)"; \
	find -type f -name '*.a' -delete; \
	make install; \
	make clean; \
	\
# https://github.com/docker-library/php/issues/692 (copy default example "php.ini" files somewhere easily discoverable)
	cp -v php.ini-* "$PHP_INI_DIR/"; \
	\
	cd /; \
	\
# reset apt-mark's "manual" list so that "purge --auto-remove" will remove all build dependencies
	apt-mark auto '.*' > /dev/null; \
	[ -z "$savedAptMark" ] || apt-mark manual $savedAptMark; \
	find /usr/local -type f -executable -exec ldd '{}' ';' \
		| awk '/=>/ { print $(NF-1) }' \
		| sort -u \
		| xargs -r dpkg-query --search \
		| cut -d: -f1 \
		| sort -u \
		| xargs -r apt-mark manual \
	; \
#	apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
	\
# update pecl channel definitions https://github.com/docker-library/php/issues/443
	pecl update-channels; \
	rm -rf /tmp/pear ~/.pearrc; \
	\
# smoke test
	php --version

COPY docker-php-ext-* docker-php-entrypoint /usr/local/bin/

# sodium was built as a shared module (so that it can be replaced later if so desired), so let's enable it too (https://github.com/docker-library/php/issues/598)
RUN docker-php-ext-enable sodium

ENTRYPOINT ["docker-php-entrypoint"]
# https://httpd.apache.org/docs/2.4/stopping.html#gracefulstop
STOPSIGNAL SIGWINCH

COPY apache2-foreground /usr/local/bin/
WORKDIR /var/www/html

EXPOSE 80
CMD ["apache2-foreground"]