`curl` dependency not documented

[fabian4cast]

Hey,

we're currently making use of pyfirecrest in a containerized application to upload files to a CSCS machine and it fails, whereas it works locally.

Apparently curl seems to be a dependency of the package, but this is not documented anywhere.

INFO:firecrest.ExternalStorage:Uploading the file to the staging area with the command: curl -f --show-error -s -i https://object.cscs.ch/v1/<path> -X POST -F max_file_size=1073741824000 -F max_file_count=1 -F expires=1709822431 -F signature=<signature> -F redirect= -F file=@/tmp/tmp4qb2emu1/compute-backend-config-unicore.yaml 
...
  File "/venv/lib/python3.9/site-packages/firecrest/ExternalStorage.py", line 175, in finish_upload
    command = subprocess.run(
  File "/usr/local/lib/python3.9/subprocess.py", line 505, in run
    with Popen(*popenargs, **kwargs) as process:
  File "/usr/local/lib/python3.9/subprocess.py", line 951, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/usr/local/lib/python3.9/subprocess.py", line 1837, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: 'curl'

I suppose you add this to the README.md, or add a INSTALL.md.

If you're aware of any other dependency you should add them as well, of course.

Regards
Fabian from 4cast

[ekouts]

Hi Fabian, thank for catching this. We will update the documentation or change the method of uploading the file.