v0.22.0-pkg-ac8a54cb-ls2

LinuxServer Changes:

fixing syntax error when concatting the env var for CI

bookstack Changes:

• Update instructions
• Update details on blog

Full List of Changes

• Added setting to set the Books view as the homepage. Thanks to @Abijeet. (#615,#830)
• Updated German translations. Thanks to @vriic. (#851)
• Updated Spanish translations. Thanks to @moucho. (#846)
• Updated Swedish translations. Thanks to @marcusforsberg. (#802)
• Ubuntu 18.04 install script now available. (#850)
• Updated tag and details design in sidebar to be more compact and cleaner. (#838)
• Drawings now create new image records instead of overwriting existing content. (#837, #770)
• Added new 'Maintenance' area to settings with option to clean-up images. (#837)
• Updated design of image manager and fixed search-cancel button to not always clear all images shown. (#837)
• Updated back-to-top button to not show on not scrollable pages such as the edit view. (#824)
• Added .env option to set Secure/HTTPS only cookies. (#817)
• Updated link attaching to allow any link types, Not only links matching a set pattern. (#812)
• Updated Secure Images setting to not alter names of uploaded images, Only their paths.
• Fixed relative CSS references causing WKHTML PDF exports to fail. Now callout icons will show in exports. (#796)
• Fixed issue with c-like languages not highlighting correctly in code blocks. (#849)
• Fixed design bug causing search icon to overlap input in header. (#859)