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GUI application via Wayland from Ubuntu LXD container on Arch Linux host

GUI application via Wayland from Ubuntu LXD container on Arch Linux host

Sources

Install Wayland in Ubuntu: https://askubuntu.com/questions/832509/how-to-install-wayland-on-ubuntu-16-04-lts

Start X applications in a container: https://blog.simos.info/how-to-run-graphics-accelerated-gui-apps-in-lxd-containers-on-your-ubuntu-desktop/

Wayland in container: https://unix.stackexchange.com/questions/330366/how-can-i-run-a-graphical-application-in-a-container-under-wayland/359244#359244

UID/GID mapping: https://lists.linuxcontainers.org/pipermail/lxc-users/2016-July/012047.html

install LXD

sudo pacman -S lxd arch-install-scripts
wget https://aur.archlinux.org/cgit/aur.git/snapshot/lxd.tar.gz
tar xvf lxd.tar.gz
cd lxd
makepkg --syncdeps

systemctl start lxd.service

map UID/GID

# auf dem Host
echo "root:$UID:1" | sudo tee -a /etc/subuid /etc/subgid

cat /etc/subuid

# auf dem Host
cat /etc/subuid /etc/subgid 
user:100000:65536
lxd:165536:65536
root:165536:65536
root:1000:1

launch container

# auf dem Host
lxc launch ubuntu:x guiapps

Configure lxd and restart container

# auf dem Host
lxc config set guiapps raw.idmap "both $UID 1000"
lxc restart guiapps

home directory in rootfs

# auf dem Host
[user@host ~]# sudo ls -al /var/lib/lxd/containers/guiapps/rootfs/home/ubuntu/
total 31
drwxr-xr-x 7 jan    jan    3488 31. Dez 14:04 .
drwxr-xr-x 3 165536 165536 3488 31. Dez 12:45 ..
drwxr-xr-x 2 165536 165536 3488 31. Dez 13:45 1000
-rw------- 1 jan    jan     570 31. Dez 14:06 .bash_history
-rw-r--r-- 1 jan    jan     220  1. Sep 2015  .bash_logout
-rw-r--r-- 1 jan    jan    3771  1. Sep 2015  .bashrc
drwxr-xr-x 4 jan    jan    3488 31. Dez 14:05 .cache
drwxr-xr-x 2 jan    jan    3488 31. Dez 14:04 Desktop
drwx------ 5 jan    jan    3488 31. Dez 14:04 .mozilla
-rw-r--r-- 1 jan    jan     778 31. Dez 13:50 .procode
drwx------ 2 jan    jan    3488 31. Dez 12:45 .ssh
-rw-r--r-- 1 jan    jan       0 31. Dez 13:41 .sudo_as_admin_successful

Wayland in Container

# im Container
# xwayland hier mit kleinem X
sudo apt-get update && sudo apt-get install xwayland weston x11-apps mesa-utils



# im Container
sudo apt-get update && sudo apt-get install xwayland weston x11-apps mesa-utils
Hit:1 http://archive.ubuntu.com/ubuntu xenial InRelease
Get:2 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]                             
Hit:3 http://security.ubuntu.com/ubuntu xenial-security InRelease                                    
Get:4 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
Fetched 204 kB in 0s (301 kB/s)                              
Reading package lists... Done
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  colord colord-data dconf-gsettings-backend dconf-service fontconfig fontconfig-config fonts-dejavu-core libavahi-client3 libavahi-common-data libavahi-common3
  libboost-codesystem1.58.0 libboost-system1.58.0 libcairo2 libcapnp-0.5.3 libcolord2 libcolorhug2 libdatrie1 libdconf1 libdrm-amdgpu1 libdrm-intel1 libdrm-nouveau2
  libdrm-radeon1 libegl1-mesa libepoxy0 libevdev2 libexif12 libfontconfig1 libfontenc1 libgbm1 libgd3 libgl1-mesa-dri libgl1-mesa-glx libglapi-mesa libgles2-mesa
  libgphoto2-6 libgphoto2-l10n libgphoto2-port12 libgraphite2-3 libgudev-1.0-0 libgusb2 libharfbuzz0b libice6 libieee1284-3 libinput-bin libinput10 libjbig0
  libjpeg-turbo8 libjpeg8 liblcms2-2 libllvm4.0 libltdl7 libmirclient9 libmircommon7 libmircore1 libmirprotobuf3 libmtdev1 libpango-1.0-0 libpangocairo-1.0-0
  libpangoft2-1.0-0 libpciaccess0 libpixman-1-0 libprotobuf-lite9v5 libsane libsane-common libsensors4 libsm6 libthai-data libthai0 libtiff5 libtxc-dxtn-s2tc0 libvpx3
  libwacom-bin libwacom-common libwacom2 libwayland-client0 libwayland-cursor0 libwayland-egl1-mesa libwayland-server0 libx11-xcb1 libxaw7 libxcb-composite0
  libxcb-dri2-0 libxcb-dri3-0 libxcb-glx0 libxcb-present0 libxcb-render0 libxcb-shm0 libxcb-sync1 libxcb-xfixes0 libxcb-xkb1 libxcursor1 libxdamage1 libxfixes3
  libxfont1 libxkbcommon0 libxkbcode1 libxmu6 libxpm4 libxrender1 libxshmfence1 libxt6 libxxf86vm1 x11-common x11-xkb-utils xfonts-base xfonts-encodings xfonts-utils
  xserver-common
Suggested packages:
  colord-sensor-argyll libgd-tools gphoto2 liblcms2-utils avahi-daemon hplip libsane-extras sane-utils lm-sensors xfs | xserver
The following NEW packages will be installed:
  colord colord-data dconf-gsettings-backend dconf-service fontconfig fontconfig-config fonts-dejavu-core libavahi-client3 libavahi-common-data libavahi-common3
  libboost-codesystem1.58.0 libboost-system1.58.0 libcairo2 libcapnp-0.5.3 libcolord2 libcolorhug2 libdatrie1 libdconf1 libdrm-amdgpu1 libdrm-intel1 libdrm-nouveau2
  libdrm-radeon1 libegl1-mesa libepoxy0 libevdev2 libexif12 libfontconfig1 libfontenc1 libgbm1 libgd3 libgl1-mesa-dri libgl1-mesa-glx libglapi-mesa libgles2-mesa
  libgphoto2-6 libgphoto2-l10n libgphoto2-port12 libgraphite2-3 libgudev-1.0-0 libgusb2 libharfbuzz0b libice6 libieee1284-3 libinput-bin libinput10 libjbig0
  libjpeg-turbo8 libjpeg8 liblcms2-2 libllvm4.0 libltdl7 libmirclient9 libmircommon7 libmircore1 libmirprotobuf3 libmtdev1 libpango-1.0-0 libpangocairo-1.0-0
  libpangoft2-1.0-0 libpciaccess0 libpixman-1-0 libprotobuf-lite9v5 libsane libsane-common libsensors4 libsm6 libthai-data libthai0 libtiff5 libtxc-dxtn-s2tc0 libvpx3
  libwacom-bin libwacom-common libwacom2 libwayland-client0 libwayland-cursor0 libwayland-egl1-mesa libwayland-server0 libx11-xcb1 libxaw7 libxcb-composite0
  libxcb-dri2-0 libxcb-dri3-0 libxcb-glx0 libxcb-present0 libxcb-render0 libxcb-shm0 libxcb-sync1 libxcb-xfixes0 libxcb-xkb1 libxcursor1 libxdamage1 libxfixes3
  libxfont1 libxkbcommon0 libxkbcode1 libxmu6 libxpm4 libxrender1 libxshmfence1 libxt6 libxxf86vm1 weston x11-common x11-xkb-utils xfonts-base xfonts-encodings
  xfonts-utils xserver-common xwayland
0 upgraded, 110 newly installed, 0 to remove and 0 not upgraded.
Need to get 37.2 MB of archives.
After this operation, 233 MB of additional disk space will be used.
Do you want to continue? [Y/n] y

use graphics hardware acceleration

# auf dem Host
lxc config device add guiapps mygpu gpu
lxc config device set guiapps mygpu uid 1000
lxc config device set guiapps mygpu gid 1000

mount wayland socket

# auf dem Host
# für Wayland
lxc config device add guiapps u1000 disk path=/home/ubuntu/1000 source=/run/user/1000
# für X (xclock etc)
lxc config device add guiapps X0 disk path=/tmp/.X11-unix/X0 source=/tmp/.X11-unix/X0

Container config should look like that:

lxc config show guiapps

architecture: x86_64
config:
  image.architecture: amd64
  image.description: ubuntu 16.04 LTS amd64 (release) (20171221)
  image.label: release
  image.os: ubuntu
  image.release: xenial
  image.serial: "20171221"
  image.version: "16.04"
  raw.idmap: both 1000 1000
  volatile.base_image: 37a7b2fc60a834b0249df4af35e470c8409c51d48b5b097d32d5ca07a86ccda6
  volatile.eth0.hwaddr: 00:16:3e:39:5f:6a
  volatile.eth0.name: eth0
  volatile.idmap.base: "0"
  volatile.idmap.next: '[{"Isuid":true,"Isgid":false,"Hostid":165536,"Nsid":0,"Maprange":1000},{"Isuid":true,"Isgid":true,"Hostid":1000,"Nsid":1000,"Maprange":1},{"Isuid":true,"Isgid":false,"Hostid":166537,"Nsid":1001,"Maprange":64535},{"Isuid":false,"Isgid":true,"Hostid":165536,"Nsid":0,"Maprange":1000},{"Isuid":true,"Isgid":true,"Hostid":1000,"Nsid":1000,"Maprange":1},{"Isuid":false,"Isgid":true,"Hostid":166537,"Nsid":1001,"Maprange":64535}]'
  volatile.last_state.idmap: '[{"Isuid":true,"Isgid":false,"Hostid":165536,"Nsid":0,"Maprange":1000},{"Isuid":true,"Isgid":true,"Hostid":1000,"Nsid":1000,"Maprange":1},{"Isuid":true,"Isgid":false,"Hostid":166537,"Nsid":1001,"Maprange":64535},{"Isuid":false,"Isgid":true,"Hostid":165536,"Nsid":0,"Maprange":1000},{"Isuid":true,"Isgid":true,"Hostid":1000,"Nsid":1000,"Maprange":1},{"Isuid":false,"Isgid":true,"Hostid":166537,"Nsid":1001,"Maprange":64535}]'
  volatile.last_state.power: RUNNING
devices:
  X0:
    path: /tmp/.X11-unix/X0
    source: /tmp/.X11-unix/X0
    type: disk
  mygpu:
    gid: "1000"
    type: gpu
    uid: "1000"
  u1000:
    path: /home/ubuntu/1000
    source: /run/user/1000
    type: disk
ephemeral: false
procodes:
- default
stateful: false
description: ""

set some environment variables in container

# im Container (als user)
echo "export XDG_RUNTIME_DIR=/home/ubuntu/1000" >> ~/.profile
echo "export WAYLAND_DISPLAY=wayland-0" >> ~/.profile
echo "export QT_QPA_PLATFORM=wayland" >> ~/.profile
echo "export DISPLAY=:0" >> .profile
. .profile

Test

# im Container
xclock
glxinfo
glxgears

install Firefox

# im Container
sudo apt-get install firefox



sudo apt-get install firefox
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  adwaita-icon-theme at-spi2-core glib-networking glib-networking-common
  glib-networking-services gsettings-desktop-schemas hicolor-icon-theme
  humanity-icon-theme libasound2 libasound2-data libatk-bridge2.0-0
  libatk1.0-0 libatk1.0-data libatspi2.0-0 libcairo-gobject2 libcanberra0
  libcroco3 libcups2 libdbusmenu-glib4 libdbusmenu-gtk4 libgdk-pixbuf2.0-0
  libgdk-pixbuf2.0-common libgtk-3-0 libgtk-3-bin libgtk-3-common
  libgtk2.0-0 libgtk2.0-bin libgtk2.0-common libjson-glib-1.0-0
  libjson-glib-1.0-common libogg0 libproxy1v5 librest-0.7-0 librsvg2-2
  librsvg2-common libsoup-gnome2.4-1 libsoup2.4-1 libstartup-notification0
  libtdb1 libvorbis0a libvorbiscode3 libxcb-util1 libxcomposite1 libxi6
  libxinerama1 libxrandr2 libxtst6 sound-theme-freedesktop ubuntu-mono
  xul-ext-ubufox
Suggested packages:
  fonts-lyx libasound2-plugins alsa-utils libcanberra-gtk0
  libcanberra-pulse cups-common gvfs librsvg2-bin
The following NEW packages will be installed:
  adwaita-icon-theme at-spi2-core firefox glib-networking
  glib-networking-common glib-networking-services gsettings-desktop-schemas
  hicolor-icon-theme humanity-icon-theme libasound2 libasound2-data
  libatk-bridge2.0-0 libatk1.0-0 libatk1.0-data libatspi2.0-0
  libcairo-gobject2 libcanberra0 libcroco3 libcups2 libdbusmenu-glib4
  libdbusmenu-gtk4 libgdk-pixbuf2.0-0 libgdk-pixbuf2.0-common libgtk-3-0
  libgtk-3-bin libgtk-3-common libgtk2.0-0 libgtk2.0-bin libgtk2.0-common
  libjson-glib-1.0-0 libjson-glib-1.0-common libogg0 libproxy1v5
  librest-0.7-0 librsvg2-2 librsvg2-common libsoup-gnome2.4-1 libsoup2.4-1
  libstartup-notification0 libtdb1 libvorbis0a libvorbiscode3 libxcb-util1
  libxcomposite1 libxi6 libxinerama1 libxrandr2 libxtst6
  sound-theme-freedesktop ubuntu-mono xul-ext-ubufox
0 upgraded, 51 newly installed, 0 to remove and 0 not upgraded.
Need to get 55.5 MB of archives.
After this operation, 232 MB of additional disk space will be used.
Do you want to continue? [Y/n] y

start Firefox

# im Container
firefox

Create a shortcut for Firefox on the host

# auf dem Host
nano ~/.local/share/applications/lxd-firefox.desktop

[Desktop Entry]
Version=1.0
Name=Firefox in LXD
Comment=Access the Internet through an LXD container
Exec=lxc exec guiapps -- su --login ubuntu firefox %U
Icon=/usr/share/icons/HighContrast/scalable/apps-extra/firefox-icon.svg
Type=Application
Categories=Network;WebBrowser;

chmod +x ~/.local/share/applications/lxd-firefox.desktop

TODO: sound

see also: https://blog.simos.info/how-to-run-graphics-accelerated-gui-apps-in-lxd-containers-on-your-ubuntu-desktop/

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