Config option to allow the vagrant user to write to additional directories

[klonos]

Problem/Motivation

Backdrop CMS has its directories for contrib/custom modules and themes directly under the docroot (as opposed to Drupal 7, which is under /sites/[whatever]/files).

Steps to reproduce

Use the Project Browser that's available in core Backdrop CMS to install any contrib module/theme.

Expected behaviour

I would expect that it would be possible to install modules/themes via the UI.

Actual behaviour

When trying to install modules/themes via the UI, you get a "Permissions are not set up properly." error.

Proposed changes

Ideally: detect that this is a Backdrop installation and automatically configure permissions for the /modules, /themes and layouts directories.

Alternatively: provide a config option to specify additional directories within the docroot, where the vagrant user has write permissions

[klonos]

@thom8 in #442 (comment) you mentioned this:

... you could create a pre provisioning task which allows access to other directories...

How does one go about doing that?

[thom8]

@klonos you can create pre & post provisioning tasks with ansible -- https://beetbox.readthedocs.io/en/latest/configuration/ansible/custom-tasks/

You can see some example in this project for setting folder permissions eg. https://github.com/beetboxvm/beetbox/blob/master/provisioning/ansible/playbook-config.yml#L67-L74

and further info in the ansible file module --https://docs.ansible.com/ansible/latest/modules/file_module.html