Currently there is no option to specify ansible config file.  Since ansible-plugin doesn't cd to  playbook-file directory, ansible.cfg in this directory is not honored. So, I have to modify system /etc/ansible/ansible.cfg or user's ~/.ansible.cfg.

For some reason ansible-playbook itself doesn't have an option to specify config from command line.

Now I see 2 workarounds:

• set ANSIBLE_CONFIG environment variable before the ansible step
• copy ansible.cfg to workspace before the ansible step

It's obvious that both are inconvenient.

Please, add an option to specify ansible config file, that will set ANSIBLE_CONFIG envrionment variable (or more widely - an option to set any environment variable for running playbook).