FROM docker.io/alpine:3.20 AS builder
LABEL maintainer="Sebastian Hugentobler <sebastian@vanwa.ch>"

RUN apk --no-cache add \
	curl \
	tar \
	xz

RUN mkdir /overlay

ENV S6_OVERLAY_VERSION=v3.1.6.2
ENV S6_HASH_noarch=05af2536ec4fb23f087a43ce305f8962512890d7c71572ed88852ab91d1434e3
ENV S6_HASH_aarch64=3fc0bae418a0e3811b3deeadfca9cc2f0869fb2f4787ab8a53f6944067d140ee
ENV S6_HASH_x86_64=95081f11c56e5a351e9ccab4e70c2b1c3d7d056d82b72502b942762112c03d1c

RUN curl -L -O https://github.com/just-containers/s6-overlay/releases/download/$S6_OVERLAY_VERSION/s6-overlay-noarch.tar.xz
RUN echo "$S6_HASH_noarch  s6-overlay-noarch.tar.xz" | sha256sum -c - || exit 1
RUN tar xf s6-overlay-noarch.tar.xz -C /overlay --strip 1

RUN curl -L -O https://github.com/just-containers/s6-overlay/releases/download/$S6_OVERLAY_VERSION/s6-overlay-$(arch).tar.xz
RUN eval "echo \"\${S6_HASH_$(arch)}  s6-overlay-$(arch).tar.xz\" | sha256sum -c -" || exit 1
RUN tar xf s6-overlay-$(arch).tar.xz -C /overlay --strip 1


FROM docker.io/alpine:3.20

ENV LANG=en_US.UTF-8
ENV S6_KEEP_ENV=1
ENV PATH="$PATH:/command"
ENV S6_GLOBAL_PATH="$PATH"

COPY --from=builder /overlay /

RUN apk --no-cache add \
	syslog-ng \
	tzdata

ENV TZ=Europe/Zurich

RUN apk --no-cache upgrade --ignore alpine-baselayout

ADD /rootfs /

ENTRYPOINT ["/init"]