# Copyright (c) Microsoft Corporation.
# Licensed under the MIT License.

ARG BASE_IMAGE

FROM $BASE_IMAGE AS BASE

ARG AZL_VERSION=2.0

ARG RPMS_TO_INSTALL
ARG RPMS_PATH="/dockerStage/RPMS"
ARG LOCAL_REPO_FILE="/dockerStage/marinerLocalRepo.repo"
ARG LOCAL_REPO_PATH="/localrepo"

# Create local repo with the given RPMS.
# This will allow the user to install packages from the local repo
# instead of fetching from PMC
RUN --mount=type=bind,source=./Stage/,target=/dockerStage/ \
    mkdir -p $LOCAL_REPO_PATH; \
    tdnf install -y --releasever=$AZL_VERSION createrepo; \
    cp -r ${RPMS_PATH} ${LOCAL_REPO_PATH}; \
    cp ${LOCAL_REPO_FILE} /etc/yum.repos.d/local.repo; \
    createrepo --compatibility --database ${LOCAL_REPO_PATH} --workers 10; \
    tdnf makecache; \
    tdnf autoremove -y createrepo;

# Install packages into a staging location.
# Staging directory is copied into the final scratch image.
RUN mkdir /staging \
    && tdnf install -y --releasever=$AZL_VERSION --installroot /staging \
    ${RPMS_TO_INSTALL} \
    && tdnf clean all \
    && pushd /staging \
    && rm -rf boot media mnt opt run \
    && rm -rf usr/lib/sysimage \
    && rm -rf var/cache; \
	ln -vL /staging/usr/sbin/busybox /staging/bin/; \
	chroot /staging /bin/busybox --install -s /bin

# Smoke Tests
# Test and make sure it works
RUN chroot /staging /usr/bin/env sh -xec 'true'

# Ensure correct timezone (UTC)
RUN [ "$(chroot /staging date +%Z)" = 'UTC' ]

# Test and make sure DNS works too
RUN cp -L /etc/resolv.conf /staging/etc/; \
	chroot /staging /bin/sh -xec 'nslookup microsoft.com'; \
	rm /staging/etc/resolv.conf

FROM scratch

# Copy dependencies into the scratch image.
COPY --from=BASE /staging/ .
COPY --from=BASE EULA-Container.txt /
CMD [ "sh" ]