Dockerfile

FROM alpine:3.23

# add our user and group first to make sure their IDs get assigned consistently, regardless of whatever dependencies get added
RUN set -eux; \
# alpine already has a gid 999, so we'll use the next id
	addgroup -S -g 1000 redis; \
	adduser -S -G redis -u 999 redis

# runtime dependencies
RUN set -eux; \
	apk add --no-cache \
# add tzdata for https://github.com/docker-library/redis/issues/138
		tzdata \
# we need setpriv package as busybox provides very limited functionality
		setpriv \
	;
ARG REDIS_DOWNLOAD_URL=https://github.com/redis/redis/archive/refs/tags/8.6-rc1.tar.gz
ARG REDIS_DOWNLOAD_SHA=dc387a093cb4f956953492eeb613e833b53ee23a45625bde01cc6d2497a5c0e7
RUN set -eux; \
	\
	apk add --no-cache --virtual .build-deps \
		coreutils \
		dpkg-dev dpkg \
		gcc \
		linux-headers \
		make \
		musl-dev \
		openssl-dev \
		g++; \
	\
	arch="$(dpkg --print-architecture | awk -F- '{ print $NF }')"; \
	case "$arch" in \
		'amd64') export BUILD_WITH_MODULES=yes; export INSTALL_RUST_TOOLCHAIN=yes; export DISABLE_WERRORS=yes ;; \
		'arm64') export BUILD_WITH_MODULES=yes; export INSTALL_RUST_TOOLCHAIN=yes; export DISABLE_WERRORS=yes ;; \
		*) echo >&2 "Modules are NOT supported! unsupported architecture: '$arch'"; export BUILD_WITH_MODULES=no ;; \
	esac; \
	if [ "$BUILD_WITH_MODULES" = "yes" ]; then \
	apk add --no-cache --virtual .module-build-deps \
		autoconf \
		automake \
		bash \
		bsd-compat-headers \
		build-base \
		cargo \
		clang21 \
		clang21-static \
		clang21-libclang \
		cmake \
		curl \
		g++ \
		git \
		libffi-dev \
		libgcc \
		libtool \
		llvm21-dev \
		ncurses-dev \
		openssh \
		openssl  \
		py-virtualenv \
		py3-cryptography \
		py3-pip \
		py3-virtualenv \
		python3 \
		python3-dev \
		rsync \
		tar \
		unzip \
		which \
		xsimd \
		xz; \
	fi; \
	\
# install required python packages for RedisJSON module
	pip install -q --upgrade setuptools &&  pip install -q --upgrade pip && PIP_BREAK_SYSTEM_PACKAGES=1 pip install -q addict toml jinja2 ramp-packer ;\
	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/redis/redis/commit/edd4d555df57dc84265fdfb4ef59a4678832f6da
	grep -E '^ *createBoolConfig[(]"protected-mode",.*, *1 *,.*[)],$' /usr/src/redis/src/config.c; \
	sed -ri 's!^( *createBoolConfig[(]"protected-mode",.*, *)1( *,.*[)],)$!\10\2!' /usr/src/redis/src/config.c; \
	grep -E '^ *createBoolConfig[(]"protected-mode",.*, *0 *,.*[)],$' /usr/src/redis/src/config.c; \
# for future reference, we modify this directly in the source instead of just supplying a default configuration flag because apparently "if you specify any argument to redis-server, [it assumes] you are going to specify everything"
# see also https://github.com/docker-library/redis/issues/4#issuecomment-50780840
# (more exactly, this makes sure the default behavior of "save on SIGTERM" stays functional by default)
	\
# https://github.com/jemalloc/jemalloc/issues/467 -- we need to patch the "./configure" for the bundled jemalloc to match how Debian compiles, for compatibility
# (also, we do cross-builds, so we need to embed the appropriate "--build=xxx" values to that "./configure" invocation)
	gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
	extraJemallocConfigureFlags="--build=$gnuArch"; \
# https://salsa.debian.org/debian/jemalloc/-/blob/c0a88c37a551be7d12e4863435365c9a6a51525f/debian/rules#L8-23
	dpkgArch="$(dpkg --print-architecture)"; \
	case "${dpkgArch##*-}" in \
		amd64 | i386 | x32) extraJemallocConfigureFlags="$extraJemallocConfigureFlags --with-lg-page=12" ;; \
		*) extraJemallocConfigureFlags="$extraJemallocConfigureFlags --with-lg-page=16" ;; \
	esac; \
	extraJemallocConfigureFlags="$extraJemallocConfigureFlags --with-lg-hugepage=21"; \
	grep -F 'cd jemalloc && ./configure ' /usr/src/redis/deps/Makefile; \
	sed -ri 's!cd jemalloc && ./configure !&'"$extraJemallocConfigureFlags"' !' /usr/src/redis/deps/Makefile; \
	grep -F "cd jemalloc && ./configure $extraJemallocConfigureFlags " /usr/src/redis/deps/Makefile; \
	\
# Disable static linking the C runtime for RediSearch's rust submodule
	export RUST_DYN_CRT=1; \
	export PATH="/usr/lib/llvm21/bin:$PATH"; \
	export BUILD_TLS=yes; \
	if [ "$BUILD_WITH_MODULES" = "yes" ]; then \
		make -C /usr/src/redis/modules/redisjson get_source; \
		sed -i 's/^RUST_FLAGS=$/RUST_FLAGS += -C target-feature=-crt-static/' /usr/src/redis/modules/redisjson/src/Makefile ; \
		grep -E 'RUST_FLAGS' /usr/src/redis/modules/redisjson/src/Makefile; \
	fi; \
	make -C /usr/src/redis -j "$(nproc)" all; \
	make -C /usr/src/redis install; \
	make -C /usr/src/redis distclean; \
	rm -r /usr/src/redis; \
	\
	runDeps="$( \
		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 .redis-rundeps $runDeps; \
	if [ "$BUILD_WITH_MODULES" = "yes" ]; then \
		apk del --no-network .module-build-deps; \
	fi; \
	apk del --no-network .build-deps; \
	rm -rf ~/.cache ~/.gitconfig; \
	\
	redis-cli --version; \
	redis-server --version;
RUN mkdir /data && chown redis:redis /data
WORKDIR /data

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

EXPOSE 6379
CMD ["redis-server"]