# STAGE 1: Initial Setup from gentoo/stage3
FROM gentoo/stage3 AS setup

RUN cat <<-EOF >>/etc/portage/make.conf
ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="*"
EMERGE_DEFAULT_OPTS="--autounmask=y --autounmask-continue=y --getbinpkg --usepkg --jobs=2"
MAKEOPTS="-j$(nproc)"
FEATURES="getbinpkg -pid-sandbox -ipc-sandbox -network-sandbox"
EOF

RUN mkdir -p /etc/portage/binrepos.conf/ && \
    cat <<-EOF >/etc/portage/binrepos.conf/gentoobinhost.conf
[binhost]
priority = 9999
sync-uri = https://distfiles.gentoo.org/releases/amd64/binpackages/23.0/x86-64/
EOF

# Match binhost USE flags
RUN cat <<-EOF >>/etc/portage/package.use/use
media-libs/mesa vulkan wayland
sys-devel/gcc lto pgo
x11-libs/libxkbcommon X wayland
EOF

RUN emaint sync -a >/dev/null && \
    emerge --update --oneshot -v app-portage/getuto && \
    getuto

# STAGE 2: Emerge @world
FROM setup AS world
RUN emerge --update --deep --newuse -v @world

# STAGE 3: Emerge LLVM
FROM world AS llvm
RUN emerge --update -v llvm-core/llvm

# STAGE 4: Emerge Clang
FROM llvm AS clang
RUN emerge --update -v llvm-core/clang

# STAGE 5: Final image
FROM clang AS final
RUN emerge --onlydeps -v www-client/google-chrome-unstable