FROM alpine:3.15 AS builder
LABEL maintainer="Sebastian Hugentobler <sebastian@vanwa.ch>"

ARG TARGETPLATFORM

ENV S6_OVERLAY_VERSION=v3.0.0.2
ENV SHA256_amd64=a4c039d1515812ac266c24fe3fe3c00c48e3401563f7f11d09ac8e8b4c2d0b0c
ENV SHA256_aarch64=e6c15e22dde00af4912d1f237392ac43a1777633b9639e003ba3b78f2d30eb33

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:3.14

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"]