I do have Pihole 5.15 up and running with Docker. It does wok in general.
But there is a small problem: instead of blocking page I do get the the placeholder page. I've already tried to delete all files in the folder as is desribed there (Getting lighthttpd placeholder page instead of new unblock page - #2 by DL6ER). But then I get an 403 error.
What I need to setup in order to get the page (back)?
Please elaborate, and include some screen shots showing what you are seeing. In this forum, you can paste images (or upload images) directly into your reply.