FROM alpine:3.12 AS builder
LABEL maintainer="Sebastian Hugentobler <sebastian@vanwa.ch>"

ARG TARGETPLATFORM

ENV S6_OVERLAY_VERSION=v2.1.0.2
ENV SHA256_amd64=52460473413601ff7a84ae690b161a074217ddc734990c2cdee9847166cf669e
ENV SHA256_aarch64=6783da208a23141e09cf9e02e923c4f01555b83d5cb33bf32d226b4b1edbaf7c

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:3.12

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"]