Offer an include/exclude containers based on a filtering options in the Docker dynamic inventory

[b-enoit-be]

SUMMARY

It would be nice to offer the possibility to exclude certain containers from the dynamic inventory, via a white or black list parameter.

For example, in the amazon.aws.aws_ec2 dynamic inventory, they are proposing two options:

• exclude_filters
• include_filters

ISSUE TYPE

• Feature Idea

COMPONENT NAME

community.docker.docker_containers; plugins/inventory/docker_containers.py

ADDITIONAL INFORMATION

It would really be nice to have the same kind of feature as the aws_ec2 dynamic inventory on the Docker one, for example, to exclude; or only include containers with a certain label.

E.g.:

plugin: community.docker.docker_containers
docker_host: unix://var/run/docker.sock

include_filters: 
  ## will only include containers having the custom label 'foo' in the inventory
  ## e.g.: In their Dockerfile,`LABEL my_customer_label=foo`
  - docker_config.Labels.my_custom_label:
    - foo 

[felixfontein]

The amazon.aws.aws_ec2 options directly translate to API request parameters, so I guess filters can and should look differently here.

This feels like something that should be generally available for all inventory plugins IMO, probably something using Jinja2 expressions that can include/exclude based on random properties returned by the inventory plugin for the host.

[felixfontein]

I started implementing this in #698.