Allowing home assistant bluetooth access

By default, App armor denies Home assistant access to bluetooth hardware when running in docker

Failed to start Bluetooth: [org.freedesktop.DBus.Error.AccessDenied] An AppArmor policy prevents this sender from sending this message to this recipient; type="method_call", sender="(null)" (inactive) interface="org.freedesktop.DBus" member="AddMatch" error name="(unset)" requested_reply="0" destination="org.freedesktop.DBus" (bus); Try power cycling the Bluetooth hardware.

1. Download https://github.com/edgexfoundry-holding/device-bluetooth-c/blob/main/docker-ble-policy
2. Place it in /etc/apparmor.d/docker-ble-policy
3. Restart apparmor sudo /etc/init.d/apparmor restart
4. Append to docker-compose.yml

    security_opt:
      - apparmor:docker-ble-policy

1. Recreate/restart home assistant: docker compose up -d

docker-ble-policy

#include <tunables/global>

profile docker-ble-policy flags=(attach_disconnected,mediate_deleted) {

  #include <abstractions/base>
  #include <abstractions/dbus-strict>

  dbus (send) bus=system peer=(name=org.bluez, label=unconfined),
  dbus (send, receive) bus=system interface=org.freedesktop.DBus.ObjectManager peer=(label=unconfined),

  network,
  capability,
  file,
  umount,

  signal (send,receive) peer=docker-ble-policy,

  deny @{PROC}/* w,   # deny write for all files directly in /proc (not in a subdir)
  # deny write to files not in /proc/<number>/** or /proc/sys/**
  deny @{PROC}/{[^1-9],[^1-9][^0-9],[^1-9s][^0-9y][^0-9s],[^1-9][^0-9][^0-9][^0-9]*}/** w,
  deny @{PROC}/sys/[^k]** w,  # deny /proc/sys except /proc/sys/k* (effectively /proc/sys/kernel)
  deny @{PROC}/sys/kernel/{?,??,[^s][^h][^m]**} w,  # deny everything except shm* in /proc/sys/kernel/
  deny @{PROC}/sysrq-trigger rwklx,
  deny @{PROC}/kcore rwklx,

  deny mount,

  deny /sys/[^f]*/** wklx,
  deny /sys/f[^s]*/** wklx,
  deny /sys/fs/[^c]*/** wklx,
  deny /sys/fs/c[^g]*/** wklx,
  deny /sys/fs/cg[^r]*/** wklx,
  deny /sys/firmware/** rwklx,
  deny /sys/kernel/security/** rwklx,


  # suppress ptrace denials when using 'docker ps' or using 'ps' inside a container
  ptrace (trace,read,tracedby,readby) peer=docker-ble-policy,

}

Credits https://www.reddit.com/r/homeassistant/comments/yfurel/help_requested_passing_bluetooth_adaptor_into_ha/