init

Dockerfile

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+FROM gentoo/stage3:systemd
+
+ADD ./entrypoint.sh /
+ADD ./world /var/lib/portage/world
+
+CMD [ "bash" , "./entrypoint.sh" ]

README.md

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+This repository is an example showing how to use a Gentoo docker image to build packages on a remote server that is more powerful.

entrypoint.sh

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+#!/bin/sh
+emerge --quiet-build sys-apps/merge-usr
+merge-usr
+
+eselect profile set default/linux/amd64/17.1/desktop/systemd/merged-usr
+
+echo 'MAKEOPTS="-j12"' >> /etc/portage/make.conf
+
+USE=-pulseaudio emerge -v media-sound/mpg123
+
+emerge -v rust-bin
+
+emerge -v gentoo-sources
+eselect kernel set 1
+
+env FEATURES="-ipc-sandbox -pid-sandbox -sandbox -usersandbox -network-sandbox" \
+    emerge --deep --update --newuse --changed-use \
+    --with-bdeps=y --usepkg --buildpkg \
+    -j 2 -l 12 \
+    --quiet-build @world

sync.sh

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+#!/bin/sh
+
+MACHINE=netbook
+
+rsync -av 		Dockerfile		10.42.42.101:dev/gentoo_${MACHINE}/
+rsync -av 		entrypoint.sh 		10.42.42.101:dev/gentoo_${MACHINE}/
+rsync -av 		/var/cache/binpkgs	10.42.42.101:dev/gentoo_${MACHINE}/
+rsync -av --delete	/etc/portage		10.42.42.101:dev/gentoo_${MACHINE}/
+rsync -av --delete	/var/db/repos		10.42.42.101:dev/gentoo_${MACHINE}/
+cp			/var/lib/portage/world	.
+rsync -av 		world	 		10.42.42.101:dev/gentoo_${MACHINE}/
+
+ssh 10.42.42.101 "docker image rm -f gentoo/build"
+ssh 10.42.42.101 "cd dev/gentoo_${MACHINE} && docker build -t gentoo/build ."
+ssh 10.42.42.101 "cd dev/gentoo_${MACHINE} && docker run -v \$PWD/binpkgs:/var/cache/binpkgs -v \$PWD/portage:/etc/portage -v \$PWD/repos:/var/db/repos gentoo/build"
+
+# requires local root to have access to remote user
+echo sudo rsync -av 10.42.42.101:/home/solene/dev/gentoo_${MACHINE}/binpkgs/ /var/cache/binpkgs/

world

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+app-admin/eclean-kernel
+app-admin/sudo
+app-arch/unzip
+app-arch/zip
+app-editors/kakoune
+app-editors/nano
+app-misc/resolve-march-native
+app-misc/tmux
+app-portage/cpuid2cpuflags
+app-portage/emlop
+app-portage/genlop
+app-portage/gentoolkit
+app-shells/fish
+app-shells/fzf
+dev-libs/atk
+dev-util/ccache
+dev-util/wayland-scanner
+gnome-base/gnome-light
+gnome-extra/gnome-software
+media-fonts/font-alias
+media-libs/libva-intel-driver
+media-sound/alsa-utils
+media-sound/mpg123
+net-fs/nfs-utils
+net-misc/dhcpcd
+net-misc/networkmanager
+net-wireless/wireless-tools
+net-wireless/wpa_supplicant
+sys-apps/fd
+sys-apps/flatpak
+sys-apps/merge-usr
+sys-boot/grub
+sys-firmware/alsa-firmware
+sys-fs/ncdu
+sys-kernel/gentoo-kernel-bin
+sys-kernel/linux-firmware
+sys-libs/libutempter
+virtual/jpeg
+www-client/firefox-bin
+x11-apps/setxkbmap
+x11-base/xorg-server