Passing file path as an argument fot notebook

[RandomFractals]

not sure which solution you went with, but I like this new clean cut @bumbeishvili provided today for inputs from query url:

Feature request: initialize input cells from url query params

There is a workaround https://beta.observablehq.com/@bumbeishvili/initialize-notebook-from-query-string-params?input=https://raw.githubusercontent.com/d3/d3/master/yarn.lock