File-based CMS for single content type

Question

Scenario

I am looking for a quick and easy solution to setup a simple CMS. I looked around at some candidates listed below, but found nothing suitable so far.

I want to only support a single content type for a certain type of content. For the sake of explaining it assume that I want to manage books. We are going to develop some custom add-on code for processing the book data managed by the CMS. The system is going to be deployed via docker and I would like to be able to build a final image that can be deployed into production.

Requirements

The following requirements should be met:

• Runs as a docker container. I'd like to build a custom image including our extensions that is deployment-ready.
• Provides a form to create an entry for a new book and edit existing entries of books
• Lists all books and provides fulltext search through all data
• Needs to have some extension possibility to add custom code for reacting to entry modifications
• Free, preferably open-source

The following requirements would be nice, but are not strictly necessary:

• File-based storage
• LDAP support
• Versioning / Auditing of entry modifications

Already considered

I already looked at the following options and found them to be lacking. I might be wrong on some of these of course.

• Plone: it's like throwing a nuclear bomb on a problem as big as a hairpin. It has everything needed above, but the setup and learning curve are just in another world.

• Drupal: seems to be hard to get a working docker instance for the full app. The standard image requires you to do all sorts of configuration and installation initially.

• grav: lacks LDAP support and apparently editing of existing book entries is hard

• pico: only hosts .md files, but no support for dynamic content creation

Answer 1

NemakiWare

• Provides a form to add new "documents". You can customize document types (and their metadata) if you need.
• Lists all, with folder hierarchy
• Full-text search for supported file types
• Custom actions: Involves modifying some Java code.
• Docker has just been added (for now you need to build the Docker files but an image will be available soon): https://github.com/aegif/NemakiWare/tree/dockerize
• Free and Open source: GNU Affero General Public License version 3

From the "would be nice" section:

• Storage is done on CouchDB, not file-based
• No LDAP support yet
• Versioning is done, you can go back to a previous version
• Auditing: No

Screenshot showing metadata and version history on the left, and custom metadata on the right (in Japanese sorry):

Disclaimer: I work for the company that makes NemakiWare.