Dockerfile-debian.template

FROM debian:%%TAG%%

RUN set -eux; \
	apt-get update; \
	apt-get install -y --no-install-recommends \
		ca-certificates \
# ERROR: no download agent available; install curl, wget, or fetch
		curl \
	; \
	rm -rf /var/lib/apt/lists/*

ENV JULIA_PATH /usr/local/julia
ENV PATH $JULIA_PATH/bin:$PATH

# https://julialang.org/juliareleases.asc
# Julia (Binary signing key) <buildbot@julialang.org>
ENV JULIA_GPG 3673DF529D9049477F76B37566E3C7DC03D6E495

# https://julialang.org/downloads/
ENV JULIA_VERSION %%JULIA_VERSION%%

RUN set -eux; \
	\
	savedAptMark="$(apt-mark showmanual)"; \
	if ! command -v gpg > /dev/null; then \
		apt-get update; \
		apt-get install -y --no-install-recommends \
			gnupg \
			dirmngr \
		; \
		rm -rf /var/lib/apt/lists/*; \
	fi; \
	\
# https://julialang.org/downloads/#julia-command-line-version
# https://julialang-s3.julialang.org/bin/checksums/julia-%%JULIA_VERSION%%.sha256
# this "case" statement is generated via "update.sh"
	%%ARCH-CASE%%; \
	\
	folder="$(echo "$JULIA_VERSION" | cut -d. -f1-2)"; \
	curl -fL -o julia.tar.gz.asc "https://julialang-s3.julialang.org/bin/linux/${dirArch}/${folder}/julia-${JULIA_VERSION}-linux-${tarArch}.tar.gz.asc"; \
	curl -fL -o julia.tar.gz     "https://julialang-s3.julialang.org/bin/linux/${dirArch}/${folder}/julia-${JULIA_VERSION}-linux-${tarArch}.tar.gz"; \
	\
	echo "${sha256} *julia.tar.gz" | sha256sum -c -; \
	\
	export GNUPGHOME="$(mktemp -d)"; \
	gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys "$JULIA_GPG"; \
	gpg --batch --verify julia.tar.gz.asc julia.tar.gz; \
	command -v gpgconf > /dev/null && gpgconf --kill all; \
	rm -rf "$GNUPGHOME" julia.tar.gz.asc; \
	\
	mkdir "$JULIA_PATH"; \
	tar -xzf julia.tar.gz -C "$JULIA_PATH" --strip-components 1; \
	rm julia.tar.gz; \
	\
	apt-mark auto '.*' > /dev/null; \
	[ -z "$savedAptMark" ] || apt-mark manual $savedAptMark; \
	apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
	\
# smoke test
	julia --version

CMD ["julia"]