Docker_002

FROM debian:buster-slim

# add our user and group first to make sure their IDs get assigned consistently, regardless of whatever dependencies get added
RUN groupadd -r -g 999 redis && useradd -r -g redis -u 999 redis

# grab gosu for easy step-down from root
# https://github.com/tianon/gosu/releases
ENV GOSU_VERSION 1.11
RUN set -eux; \
# save list of currently installed packages for later so we can clean up
	savedAptMark="$(apt-mark showmanual)"; \
	apt-get update; \
	apt-get install -y --no-install-recommends \
		ca-certificates \
		dirmngr \
		gnupg \
		wget \
	; \
	rm -rf /var/lib/apt/lists/*; \
	\
	dpkgArch="$(dpkg --print-architecture | awk -F- '{ print $NF }')"; \
	wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch"; \
	wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch.asc"; \
	\
# verify the signature
	export GNUPGHOME="$(mktemp -d)"; \
	gpg --batch --keyserver hkps://keys.openpgp.org --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4; \
	gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu; \
	gpgconf --kill all; \
	rm -rf "$GNUPGHOME" /usr/local/bin/gosu.asc; \
	\
# clean up fetch dependencies
	apt-mark auto '.*' > /dev/null; \
	[ -z "$savedAptMark" ] || apt-mark manual $savedAptMark > /dev/null; \
	apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
	\
	chmod +x /usr/local/bin/gosu; \
# verify that the binary works
	gosu --version; \
	gosu nobody true

ENV REDIS_VERSION 5.0.8
ENV REDIS_DOWNLOAD_URL http://download.redis.io/releases/redis-5.0.8.tar.gz
ENV REDIS_DOWNLOAD_SHA f3c7eac42f433326a8d981b50dba0169fdfaf46abb23fcda2f933a7552ee4ed7

RUN set -eux; \
	\
	savedAptMark="$(apt-mark showmanual)"; \
	apt-get update; \
	apt-get install -y --no-install-recommends \
		ca-certificates \
		wget \
		\
		gcc \
		libc6-dev \
		make \
	; \
	rm -rf /var/lib/apt/lists/*; \
	\
	wget -O redis.tar.gz "$REDIS_DOWNLOAD_URL"; \
	echo "$REDIS_DOWNLOAD_SHA *redis.tar.gz" | sha256sum -c -; \
	mkdir -p /usr/src/redis; \
	tar -xzf redis.tar.gz -C /usr/src/redis --strip-components=1; \
	rm redis.tar.gz; \
	\
# disable Redis protected mode [1] as it is unnecessary in context of Docker
# (ports are not automatically exposed when running inside Docker, but rather explicitly by specifying -p / -P)
# [1]: https://github.com/antirez/redis/commit/edd4d555df57dc84265fdfb4ef59a4678832f6da
	grep -q '^#define CONFIG_DEFAULT_PROTECTED_MODE 1$' /usr/src/redis/src/server.h; \
	sed -ri 's!^(#define CONFIG_DEFAULT_PROTECTED_MODE) 1$!\1 0!' /usr/src/redis/src/server.h; \
	grep -q '^#define CONFIG_DEFAULT_PROTECTED_MODE 0$' /usr/src/redis/src/server.h; \
# for future reference, we modify this directly in the source instead of just supplying a default configuration flag because apparently "if you specify any argument to redis-server, [it assumes] you are going to specify everything"
# see also https://github.com/docker-library/redis/issues/4#issuecomment-50780840
# (more exactly, this makes sure the default behavior of "save on SIGTERM" stays functional by default)
	\
	make -C /usr/src/redis -j "$(nproc)" all; \
	make -C /usr/src/redis install; \
	\
# TODO https://github.com/antirez/redis/pull/3494 (deduplicate "redis-server" copies)
	serverMd5="$(md5sum /usr/local/bin/redis-server | cut -d' ' -f1)"; export serverMd5; \
	find /usr/local/bin/redis* -maxdepth 0 \
		-type f -not -name redis-server \
		-exec sh -eux -c ' \
			md5="$(md5sum "$1" | cut -d" " -f1)"; \
			test "$md5" = "$serverMd5"; \
		' -- '{}' ';' \
		-exec ln -svfT 'redis-server' '{}' ';' \
	; \
	\
	rm -r /usr/src/redis; \
	\
	apt-mark auto '.*' > /dev/null; \
	[ -z "$savedAptMark" ] || apt-mark manual $savedAptMark > /dev/null; \
	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; \
	\
	redis-cli --version; \
	redis-server --version

RUN mkdir /data && chown redis:redis /data
VOLUME /data
WORKDIR /data

COPY docker-entrypoint.sh /usr/local/bin/
ENTRYPOINT ["docker-entrypoint.sh"]

EXPOSE 6379
CMD ["redis-server"]

FROM alpine:3.11

# ensure www-data user exists
RUN set -x \
	&& addgroup -g 82 -S www-data \
	&& adduser -u 82 -D -S -G www-data www-data
# 82 is the standard uid/gid for "www-data" in Alpine
# https://git.alpinelinux.org/cgit/aports/tree/main/apache2/apache2.pre-install?h=v3.8.1
# https://git.alpinelinux.org/cgit/aports/tree/main/lighttpd/lighttpd.pre-install?h=v3.8.1
# https://git.alpinelinux.org/cgit/aports/tree/main/nginx/nginx.pre-install?h=v3.8.1

ENV HTTPD_PREFIX /usr/local/apache2
ENV PATH $HTTPD_PREFIX/bin:$PATH
RUN mkdir -p "$HTTPD_PREFIX" \
	&& chown www-data:www-data "$HTTPD_PREFIX"
WORKDIR $HTTPD_PREFIX

ENV HTTPD_VERSION 2.4.43
ENV HTTPD_SHA256 a497652ab3fc81318cdc2a203090a999150d86461acff97c1065dc910fe10f43

# https://httpd.apache.org/security/vulnerabilities_24.html
ENV HTTPD_PATCHES=""

# see https://httpd.apache.org/docs/2.4/install.html#requirements
RUN set -eux; \
	\
	runDeps=' \
		apr-dev \
		apr-util-dbm_db \
		apr-util-dev \
		apr-util-ldap \
		perl \
	'; \
	apk add --no-cache --virtual .build-deps \
		$runDeps \
		ca-certificates \
		coreutils \
		dpkg-dev dpkg \
		gcc \
		gnupg \
		libc-dev \
		# mod_md
		curl-dev \
		jansson-dev \
		# mod_proxy_html mod_xml2enc
		libxml2-dev \
		# mod_lua
		lua-dev \
		make \
		# mod_http2
		nghttp2-dev \
		# mod_session_crypto
		openssl \
		openssl-dev \
		pcre-dev \
		tar \
		# mod_deflate
		zlib-dev \
		# mod_brotli
		brotli-dev \
	; \
	\
	ddist() { \
		local f="$1"; shift; \
		local distFile="$1"; shift; \
		local success=; \
		local distUrl=; \
		for distUrl in \
# https://issues.apache.org/jira/browse/INFRA-8753?focusedCommentId=14735394#comment-14735394
			'https://www.apache.org/dyn/closer.cgi?action=download&filename=' \
# if the version is outdated (or we're grabbing the .asc file), we might have to pull from the dist/archive :/
			https://www-us.apache.org/dist/ \
			https://www.apache.org/dist/ \
			https://archive.apache.org/dist/ \
		; do \
			if wget -O "$f" "$distUrl$distFile" && [ -s "$f" ]; then \
				success=1; \
				break; \
			fi; \
		done; \
		[ -n "$success" ]; \
	}; \
	\
	ddist 'httpd.tar.bz2' "httpd/httpd-$HTTPD_VERSION.tar.bz2"; \
	echo "$HTTPD_SHA256 *httpd.tar.bz2" | sha256sum -c -; \
	\
# see https://httpd.apache.org/download.cgi#verify
	ddist 'httpd.tar.bz2.asc' "httpd/httpd-$HTTPD_VERSION.tar.bz2.asc"; \
	export GNUPGHOME="$(mktemp -d)"; \
	for key in \
# gpg: key 791485A8: public key "Jim Jagielski (Release Signing Key) <jim@apache.org>" imported
		A93D62ECC3C8EA12DB220EC934EA76E6791485A8 \
# gpg: key 995E35221AD84DFF: public key "Daniel Ruggeri (https://home.apache.org/~druggeri/) <druggeri@apache.org>" imported
		B9E8213AEFB861AF35A41F2C995E35221AD84DFF \
	; do \
		gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
	done; \
	gpg --batch --verify httpd.tar.bz2.asc httpd.tar.bz2; \
	command -v gpgconf && gpgconf --kill all || :; \
	rm -rf "$GNUPGHOME" httpd.tar.bz2.asc; \
	\
	mkdir -p src; \
	tar -xf httpd.tar.bz2 -C src --strip-components=1; \
	rm httpd.tar.bz2; \
	cd src; \
	\
	patches() { \
		while [ "$#" -gt 0 ]; do \
			local patchFile="$1"; shift; \
			local patchSha256="$1"; shift; \
			ddist "$patchFile" "httpd/patches/apply_to_$HTTPD_VERSION/$patchFile"; \
			echo "$patchSha256 *$patchFile" | sha256sum -c -; \
			patch -p0 < "$patchFile"; \
			rm -f "$patchFile"; \
		done; \
	}; \
	patches $HTTPD_PATCHES; \
	\
	gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
	./configure \
		--build="$gnuArch" \
		--prefix="$HTTPD_PREFIX" \
		--enable-mods-shared=reallyall \
		--enable-mpms-shared=all \
# PIE and hardening flags are unnecessary as Alpine enables them automatically (https://alpinelinux.org/about/)
	; \
	make -j "$(nproc)"; \
	make install; \
	\
	cd ..; \
	rm -r src man manual; \
	\
	sed -ri \
		-e 's!^(\s*CustomLog)\s+\S+!\1 /proc/self/fd/1!g' \
		-e 's!^(\s*ErrorLog)\s+\S+!\1 /proc/self/fd/2!g' \
		-e 's!^(\s*TransferLog)\s+\S+!\1 /proc/self/fd/1!g' \
		"$HTTPD_PREFIX/conf/httpd.conf" \
		"$HTTPD_PREFIX/conf/extra/httpd-ssl.conf" \
	; \
	\
	runDeps="$runDeps $( \
		scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
			| tr ',' '\n' \
			| sort -u \
			| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
	)"; \
	apk add --no-network --virtual .httpd-rundeps $runDeps; \
	apk del --no-network .build-deps; \
	\
# smoke test
	httpd -v

# https://httpd.apache.org/docs/2.4/stopping.html#gracefulstop
STOPSIGNAL SIGWINCH

COPY httpd-foreground /usr/local/bin/

EXPOSE 80
CMD ["httpd-foreground"]