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##### SUMMARY
<!--- Describe the new feature/improvement briefly below -->
dnf has a nobest [option](https://dnf.readthedocs.io/en/latest/command_ref.html#options-label) which does the following:

> --nobest
>     Set best option to False, so that transactions are not limited to best candidates only.

##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->
dnf

##### ADDITIONAL INFORMATION
<!--- Describe how the feature would be used, why it is needed and what it would solve -->
Docker cannot be installed on CentOS8 without `--nobest` option and later on every time you want to do dnf upgrade you should pass `--nobest` option again, so that it does not complain about `docker-ce` package.
"""Configure the dnf Base object."""
        conf = base.conf
        
        if conf_file:
            
            if not os.access(conf_file, os.R_OK):
                self.module.fail_json(
                    msg="cannot read configuration file", conf_file=conf_file,
                    results=[],
                )
            else:
                conf.config_file_path = conf_file
        
        conf.read()
        
        conf.debuglevel = 0
        
        conf.gpgcheck = not disable_gpg_check
        conf.localpkg_gpgcheck = not disable_gpg_check
        
        conf.assumeyes = True
        
        conf.installroot = installroot
        
        conf.substitutions.update_from_etc(installroot)
        
        
        #