====== Docker install on the Raspberry Pi 4 ======

The default ''docker.io'' package in Debian 10 (buster) is broken.  I used puppet and the puppetlabs-docker module to install the testing version of ''docker-ce''.  I then configured the Plex Media Server as a docker container also using puppet.

1. Run the following commands as root to install ''puppet''

<code>
# wget http://apt.puppet.com/puppet5-release-$(lsb_release -sc).deb

# dpkg -i puppet5-release-$(lsb_release -sc).deb

# apt update

# apt install puppet
</code>

2. Install the ''puppetlabs-docker'' module

<code>
# puppet module install puppetlabs-docker
</code>

3. Create a puppet manifest

<note>The ''test'' channel is used because a ''stable'' package for the armv7l architecture didn't exist yet</note>

''docker.pp''
<code>
class { 'docker':
  docker_ce_channel => 'test'
}
</code>

4. Apply the ''docker.pp'' puppet manifest to install and configure docker

<code>
# puppet apply --test docker.pp
</code>

5. Example: install and run the ''linuxserver/plex'' container by appending to the ''docker.pp'' file and applying the declarative manifest.

''docker.pp''

<code>
docker::run { 'plex':
  image => 'linuxserver/plex',
  net => 'host',
  env => [
    "PUID=1000",
    "PGID=1000",
    "VERSION=docker",
  ],
  volumes => [
    "/var/lib/plex/config:/config",
    "/data/tv:/tv",
    "/data/movies:/movies",
  ],
}
</code>

Create the directories and set the owner to match the UID of the container
<code>
# mkdir -p /var/lib/plex/config /data/tv /data/movies

# chown -R 1000:1000 /var/lib/plex/config /data/tv /data/movies
</code>

<code>
# puppet apply --test docker.pp
</code>

6. You can then browse to the Plex webUI at http://raspberry.pi.ip.address:32400