FROM docker.io/alpine:3.19 AS builder
LABEL maintainer="Sebastian Hugentobler <sebastian@vanwa.ch>"

ARG TARGET_ARCH=x86_64

ENV S6_OVERLAY_VERSION=v3.1.6.2

RUN apk --no-cache add \
	git \
	make \
	binutils \
	tar \
	xz

RUN git clone https://github.com/just-containers/s6-overlay.git /src
WORKDIR /src
RUN git checkout "$S6_OVERLAY_VERSION"

RUN make ARCH=$TARGET_ARCH-linux-musl -j4
RUN mv /src/output/rootfs-overlay-${TARGET_ARCH}-linux-musl /src/output/rootfs-overlay-arch


FROM docker.io/alpine:3.19

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

COPY --from=builder /src/output/rootfs-overlay-noarch /
COPY --from=builder /src/output/rootfs-overlay-arch /

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

ENV TZ=Europe/Zurich

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

ADD /rootfs /

ENTRYPOINT ["/init"]