Config file should contain something like this:

Configure the collectd api

[input_plugins.collectd]
enabled = true

address = "0.0.0.0" # If not set, is actually set to bind-address.

port = 25826
database = "collectd"

types.db can be found in a collectd installation or on github:

https://github.com/collectd/collectd/blob/master/src/types.db

typesdb = "/usr/share/collectd/types.db" # The path to the collectd types.db file

cluster ports are not needed for this kind of setup. Should not be exposed by default.

all logs should be in the same place, supervisord as well as influxdb.

show how to access db directories.

Should be done inside the container, not by the start script.

Explain how to retrieve the default config file, customize it, and use it in the container.