LinuxServer Changes:
Rebase to alpine 3.12. Fix APP_URL setting. Bump php post max and upload max filesizes to 100MB by default.
bookstack Changes:
Security Release
This release addresses issue #2111 where the name of a restricted book could be viewed by non-authorised users when the book was on a shelf, and the shelves were viewed in "List View". This could expose book names to those that did not have permission to see them, when part of a shelf.