How to keep all post assets in post folder

[pawelklimczyk]

Very often my blogposts have additional files. Images, zip packages etc.
For future maintenance I find very useful to keep all those "post assets" kept along with the post in same folder.

Every post in separate folder.

Sample

folder "content/post123" with post.md and test.jpg.
Public url https://<blog-url>/articles/post123/ - post url
Public url https://<blog-url>/articles/post123/test.jpg - image url.

How can I accomplish that ?