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

ARG TARGETPLATFORM

ENV S6_OVERLAY_VERSION=v2.0.0.1
ENV SHA256_amd64=df235428444be7737caf363e5dcfb58e3022fa611f5a27fe309ecd6fc1755cda
ENV SHA256_aarch64=5bc75be125409f0a22ba5a5b60f9150fa236bf858200809c91f72956326f8812

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"]