[Bug]: Configure Flatpak

[Mustafa-Agha]

Describe the Bug

[ /etc/cont-init.d/80-configure_flatpak.sh: executing... ]
**** Configure Flatpak ****
mount: /proc: permission denied.
       dmesg(1) may have more information after failed mount system call.

Steps to Reproduce

Docker Version: 24.0.7

Docker Compose version v2.21.0

1- cp Dockerfile.debian Dockerfile 2- docker build -t 'steam-headless' . 3- docker run <container_id>

Expected Behavior

The expected behavior should run

Version

24.0.7

Platform

Distributor ID: Ubuntu Description: Ubuntu 20.04.4 LTS Release: 20.04 Codename: focal

Relevant log output

Build: [2023-12-02 02:37:16] [master] [6cc9f56155f3c7f9fc6bc9c22ef2cbf555029c00] [debian]

[ /etc/cont-init.d/10-setup_user.sh: executing... ]
**** Configure default user ****
  - Setting default user uid=99(default) gid=100(default)
  - Adding default user to any additional required device groups
  - Adding user 'default' to group: 'video'
  - Adding user 'default' to group: 'audio'
  - Adding user 'default' to group: 'input'
  - Adding user 'default' to group: 'pulse'
  - Setting umask to 000
  - Create the user XDG_RUNTIME_DIR path '/tmp/.X11-unix/run'
  - Setting ownership of all log files in '/home/default/.cache/log'
  - Setting root password
  - Setting user password
DONE

[ /etc/cont-init.d/11-setup_sysctl_values.sh: executing... ]
**** Configure some system kernel parameters ****
  - The vm.max_map_count is already greater than '524288'
DONE

[ /etc/cont-init.d/30-configure_dbus.sh: executing... ]
**** Configure container dbus ****
  - Container configured to run its own dbus
DONE

[ /etc/cont-init.d/30-configure_udev.sh: executing... ]
**** Configure udevd ****
  - Disable udevd - /sys is mounted RO
  - Enable dumb-udev service
DONE

[ /etc/cont-init.d/40-setup_locale.sh: executing... ]
**** Configure local ****
  - Locales already set correctly to en_US.UTF-8 UTF-8
DONE

[ /etc/cont-init.d/50-configure_pulseaudio.sh: executing... ]
**** Configure pulseaudio ****
  - Enable pulseaudio service.
  - Configure pulseaudio to pipe audio to a socket
DONE

[ /etc/cont-init.d/60-configure_gpu_driver.sh: executing... ]
**** No Intel device found ****
**** No AMD device found ****
**** No NVIDIA device found ****
DONE

[ /etc/cont-init.d/70-configure_desktop.sh: executing... ]
**** Configure Desktop ****
  - Enable Desktop service.
  - Ensure home directory template is owned by the default user.
  - Installing default home directory template
DONE

[ /etc/cont-init.d/70-configure_xorg.sh: executing... ]
**** Generate default xorg.conf ****
  - Configure Xwrapper.config
  - Configure container as primary the X server
  - Enabling evdev input class on pointers, keyboards, touchpads, touch screens, etc.
DONE

[ /etc/cont-init.d/80-configure_flatpak.sh: executing... ]
**** Configure Flatpak ****
mount: /proc: permission denied.
       dmesg(1) may have more information after failed mount system call.