# syntax=docker/dockerfile:1.5-labs
FROM alpine:3.17.1@sha256:93d5a28ff72d288d69b5997b8ba47396d2cbb62a72b5d87cd3351094b5d578a0 as builder

#
# Install dependencies
#

ADD --checksum=sha256:11968a8b706095a081ac30168849b351b0263a6df5c224119aa914d7e5afb0c1 \
    https://github.com/reproducible-containers/repro-get/releases/download/v0.3.0/repro-get-v0.3.0.linux-amd64 \
    /usr/bin/repro-get
RUN chmod +x /usr/bin/repro-get

ADD --checksum=sha256:45ae2e1f566cdc26dd9ddf0ca37a494d3fa7db29946094ae2f0d91e16def827d \
    https://github.com/oras-project/oras/releases/download/v0.16.0/oras_0.16.0_linux_amd64.tar.gz \
    /tmp/oras.tar.gz
RUN tar -C /usr/bin -xzf /tmp/oras.tar.gz oras
RUN chmod +x /usr/bin/oras

COPY SHA256SUMS-apk-amd64 /SHA256SUMS-apk-amd64

# TODO(katexochen): reenable when bug is fixed upstream,
# see https://github.com/reproducible-containers/repro-get/issues/29

# RUN repro-get \
#     --provider=oci://ghcr.io/katexochen/apk-repo-test \
#     --cache ./cache \
#     --distro alpine \
#     download /SHA256SUMS-apk-amd64

# RUN repro-get \
#     --cache ./cache \
#     --distro alpine \
#     cache export repository-apk


WORKDIR /workspace/repository-apk/x86_64

# Pull our pinned packages from the registry
RUN oras pull ghcr.io/edgelesssys/constellation/packages-apk:latest

# Need to remove the repository prefix from the hashes file
RUN sed -i -E 's%v[0-9].[0-9]+\/(main|community)\/x86_64/%%' /SHA256SUMS-apk-amd64

# Validate package hashes
RUN sha256sum -c /SHA256SUMS-apk-amd64

# Create an apk index from the packages
RUN apk index \
    --rewrite-arch x86_64 \
    -o APKINDEX.tar.gz \
    *.apk

#
# We need package abuild to sign out index.
# This is not a security mesaure. It is just a requirement of apko.
# We installe the pinned abuild package from our registry, create
# a new keypair and sign the index.
#

RUN echo "/workspace/repository-apk" > /etc/apk/repositories
RUN apk update --allow-untrusted && apk add --allow-untrusted abuild
RUN abuild-keygen -a -n

RUN mv /root/.abuild/*.rsa /root/.abuild/index-signing-key.rsa
RUN mv /root/.abuild/*.rsa.pub /root/.abuild/index-signing-key.rsa.pub
RUN echo 'PACKAGER_PRIVKEY="/root/.abuild/index-signing-key.rsa"' > /root/.abuild/abuild.conf

RUN abuild-sign APKINDEX.tar.gz

FROM scratch as output

COPY --from=builder /workspace/repository-apk repository-apk
COPY --from=builder /root/.abuild/*.rsa.pub index-signing-key.rsa.pub