golang-buster-slim.Dockerfile

FROM docker.io/debian:buster-slim

RUN set -eux; \
	apt-get update; \
	apt-get install -y --no-install-recommends \
		ca-certificates \
		wget \
		gnupg \
	; \
	rm -rf /var/lib/apt/lists/*

ENV PATH /usr/local/go/bin:$PATH
ENV GOLANG_VERSION 1.17.1

RUN set -eux; \
	arch="$(dpkg --print-architecture)"; arch="${arch##*-}"; \
	url=; \
	case "$arch" in \
		'amd64') \
			url='https://dl.google.com/go/go1.17.1.linux-amd64.tar.gz'; \
			sha256='dab7d9c34361dc21ec237d584590d72500652e7c909bf082758fb63064fca0ef'; \
			;; \
		'armhf') \
			url='https://dl.google.com/go/go1.17.1.linux-armv6l.tar.gz'; \
			sha256='ed3e4dbc9b80353f6482c441d65b51808290e94ff1d15d56da5f4a7be7353758'; \
			;; \
		'arm64') \
			url='https://dl.google.com/go/go1.17.1.linux-arm64.tar.gz'; \
			sha256='53b29236fa03ed862670a5e5e2ab2439a2dc288fe61544aa392062104ac0128c'; \
			;; \
		'i386') \
			url='https://dl.google.com/go/go1.17.1.linux-386.tar.gz'; \
			sha256='e60bb44046f424ba2cc47db7b183079b5add2f8cfa6887daf45bf2f317cc2f53'; \
			;; \
		*) echo >&2 "Unsupported architecture '$arch'"; exit 1 ;; \
	esac; \
	\
	wget -O go.tgz.asc "$url.asc"; \
	wget -O go.tgz "$url" --progress=dot:giga; \
	echo "$sha256 *go.tgz" | sha256sum -c -; \
	GNUPGHOME="$(mktemp -d)"; export GNUPGHOME; \
	gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 'EB4C 1BFD 4F04 2F6D DDCC EC91 7721 F63B D38B 4796'; \
	gpg --batch --verify go.tgz.asc go.tgz; \
	gpgconf --kill all; \
	rm -rf "$GNUPGHOME" go.tgz.asc; \
	tar -C /usr/local -xzf go.tgz; \
	rm go.tgz; \
	apt-get remove gnupg wget -y ; \
	apt-get clean; \
	apt-get autoremove -y; \
	\
	go version

ENV GOPATH /go
ENV PATH $GOPATH/bin:$PATH
RUN mkdir -p "$GOPATH/src" "$GOPATH/bin" && chmod -R 777 "$GOPATH"
WORKDIR $GOPATH