Tengu Docs : Docker in LXD

This tutorial explains how to run docker in lxd containers using Juju.

Basically, to run a docker container inside an lxd container, you need to use the docker lxd profile. However, Juju always used the default profile for lxd containers. What you need to do is to add the docker profile to the lxd profile. Note that this circumvents all the security measures of lxd.

Go to the host, become root and edit the default lxd profile.

lxc profile edit default

And change it to the following profile.

config:
  environment.http_proxy: http://[fe80::1%eth0]:13128
  user.network_mode: link-local
  linux.kernel_modules: overlay, nf_nat
  security.nesting: "true"
  security.privileged: "true"
description: Default LXD profile
devices:
  eth0:
    name: eth0
    nictype: bridged
    parent: lxdbr0
    type: nic
  aadisable:
    path: /sys/module/apparmor/parameters/enabled
    source: /dev/null
    type: disk
name: default

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Docker in LXD