FROM alpine:3.19

RUN apk add --no-cache ca-certificates

RUN set -eux; \
# https://github.com/distribution/distribution/releases
	version='3.0.0-alpha.1'; \
	apkArch="$(apk --print-arch)"; \
	case "$apkArch" in \
		x86_64)  arch='amd64';   sha256='968a6dcc648aa842963ae00a28128200b6134732ff73db6fc1e52c6f9099d1f9' ;; \
		aarch64) arch='arm64';   sha256='4f0d3ab06b8f77abf5ae39f08a214c2451b9eec4b1b9bb2eb9b9b9da3a3ad4cf' ;; \
		armhf)   arch='armv6';   sha256='5ac4ac9cd5c7c658cd719efc44a67a0ef4b03e0618aa359ae726938eade66300' ;; \
		armv7)   arch='armv7';   sha256='3c2eb167a162a17453dee0e43fb97b5abb771decf60b492e2867a2354fd0618d' ;; \
		ppc64le) arch='ppc64le'; sha256='1e39ce43428437faf31f5df636d94c4dc21958076ebf96c1bd3baf67c3f7199a' ;; \
		s390x)   arch='s390x';   sha256='94c53ba2254013b3e38d0c0a8d8005e41681f1f394c23a61db9953d61c134c07' ;; \
		*) echo >&2 "error: unsupported architecture: $apkArch"; exit 1 ;; \
	esac; \
	wget -O registry.tar.gz "https://github.com/distribution/distribution/releases/download/v${version}/registry_${version}_linux_${arch}.tar.gz"; \
	echo "$sha256 *registry.tar.gz" | sha256sum -c -; \
	tar --extract --verbose --file registry.tar.gz --directory /bin/ registry; \
	rm registry.tar.gz; \
	registry --version

COPY ./config-example.yml /etc/docker/registry/config.yml

VOLUME ["/var/lib/registry"]
EXPOSE 5000

COPY docker-entrypoint.sh /entrypoint.sh
ENTRYPOINT ["/entrypoint.sh"]

CMD ["/etc/docker/registry/config.yml"]