> How can I clone my wiki with all the technical stuff inside (plugins, settings, etc ), but without the content?
Depends on how complex your "design" component is - in my case very, so I build with this capability in mind.
I always do my "design-level" work - that isn't specific to the user-specific content - in a "master empty" TW file, and then either import the content from the old container into a new instance, or keep the "children" TWs in sync with their "parent".
Just make sure that you use a tagging convention - mine is ".system" ".content" and ".meta". The latter is for things like maintenance tiddlers with tools like
GroupByPlugin,
ShowAllByTags,
MatchTags TagGrid et all, and the tiddlers providing navigation. So ".system" can be bulk over-written from the empty to the children files, .content is master in the children (including local-only content-specific tags as opposed to system-level tags), and I need to think about what comes over in the .meta category - lately I've started to use ".metalocal for those tiddlers that are always changed locally (search results, ImportedTiddlers report, content-tag specific maintenance tiddlers, etc.
I also maintain a "master repository" to keep my plugin collection up to date and sync'd across all my TWs, and have multiple "content-tag" repositories for indexing taxonomies that are shared between multiple TWs on related but separate topics - see here
Using
ImportTiddlersPlugin's "filter" capabilities makes the whole thing much easier, although in some cases I use LoadTiddlersPlugin.
sample syntax: tag:[[!.content && !.metalocal]]
If the real gurus here have less labor-intensive methodologies they're willing to share, I'm all ears 8-)