FROM alpine:3.13.1 AS builder
LABEL maintainer="Sebastian Hugentobler <sebastian@vanwa.ch>"

ARG TARGETPLATFORM

ENV S6_OVERLAY_VERSION=v2.2.0.1
ENV SHA256_amd64=2dcb59b63d1d0f5f056d4e10d6cbae21a9c216e130080d3b5aaa8e7325ac571b
ENV SHA256_aarch64=500476317b688b314fd64d3cb8b38114c6d011baaa124a16b01bdf284cf0fb76

RUN apk --no-cache add \
    bash

ADD fetch-platform-rootfs /
RUN ./fetch-platform-rootfs
RUN mkdir /overlay
RUN tar -xvf s6-overlay.tar.gz -C /overlay

FROM alpine:3.13.1

ENV LANG=en_US.UTF-8

COPY --from=builder /overlay /

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

RUN apk --no-cache upgrade

ADD /rootfs /

ENTRYPOINT ["/init"]