On lab setup reference to opera radar db json in code repository

[BerendWijers]

Currently the initializer cell references the opera radar db from the home directory of the user

$HOME/data/conf/OPERA_RADARS_DB.json

Starting aac9254 we include the file in the repository. We should make sure that the initializer correctly points to this directory.

We need to determine the relative path from the initializer cell to the reference file. Considering the initializer is a jupyter executed cell and not a container run in a workflow this should be possible.

By default, the workflow file has the same path as working directory so we should be able to find the reference file by providing a relative path

import pathlib
print(f"{pathlib.Path.cwd()=}")
opera_radars_db_path = pathlib.Path.cwd()
print(f"{pathlib.Path.cwd().joinpath('../meta/OPERA_RADARS_DB.json').exists()=}")
opera_radars_db_path = pathlib.Path.cwd().joinpath('../meta/OPERA_RADARS_DB.json')

pathlib.Path.cwd()=PosixPath('/home/jovyan/NaaVRE/RAVRE-virtual-lab/virtual_lab/codebase')
pathlib.Path.cwd().joinpath('../meta/OPERA_RADARS_DB.json').exists()=True