Vscode-compatible REGEX that searches for a hashtag in multiline text in between some delimiters (dashes -as first non-blank characters on the line)

I am trying to achieve this and I don’t believe it can’t be done with regex, albeit I would have probably done it with scripting already …

How to redo regex match between a spcific key?

Target text example:

How do I match any character across multiple lines in a regular expression?

For example, this regex