How to set up SOLR?

[liquidcms]

Is there any complete documentation how to set up Solr (for use with D8/9 and Search API)? I have a found a few pieces of documentation but nothing current or complete. For example, this page: https://wodby.com/docs/1.0/stacks/solr-drupal/ only states this:

Install Search API Solr module. Go to Home » Administration » Configuration » Search and metadata » Search API, create a new core or edit the default one. In expanded CONFIGURE SOLR BACKEND field set specify:

HTTP protocol: http
Solr host: solr
Solr port: 8983
Solr path: /solr (LEAVE IT BLANK FOR search_api_solr 8.x-3.0 and newer)
Solr core: [NAME OF YOUR CORE]

And above that it states "We automatically create a default solr core named default when no cores found." That in itself is contradictory as it says a core is created by default (it isn't) and then it states to "Go to Home » Administration » Configuration » Search and metadata » Search API, create a new core or edit the default one. " which sounds like you can create a core from the Search aPI UI - which you can't.

So documentation errors aside; i think i need to create a core, on my own (not sure why the docker container wouldn't already have that?). Any idea how to do that? If i go to the solr admin page and try to Add Core, i get:

Error CREATEing SolrCore 'new_core': Unable to create core [new_core] Caused by: Can't find resource 'solrconfig.xml' in classpath or '/opt/solr/server/solr/new_core'

I am sure i am missing something simple here; but very limited documentation that i have found so far and doesn't seem to explain the basics. I guess i could go read up on how to install solr; but isn't that the point of this docker img - so i don't need to do that?

[liquidcms]

Found it here: https://mykola-veryha.medium.com/how-to-configure-solr-container-in-docker4drupal-for-drupal-8-bfddd78d76a6

Might be good to include this in the docs. :)