Install a munin plugin, as a very basic monitoring

munin-node

install on your docker host munin-node on mm.example.com
```
apt install munin-node
```
Copy mm-plugin from this directory to plugins dir as mm

cp mm-plugin /usr/share/munin/plugins/mm
```
sudo ln -s /usr/share/munin/plugins/mm /etc/munin/plugins/mm
```

Copy mm-plugin-conf from this directory to munin plugins conf dir as mm

copy mm-plugin-conf as to /etc/munin/plugin-conf.d

cp mm-plugin-conf /etc/munin/plugin-conf.d/mm

Restart munin

systemctl restart munin-node

Install a munin master on different host if you don't have munin already.

apt install munin

On your munin master configure the new node edit and add to /etc/munin.conf

[mm]
  mm.example.com