Update to click and requests + user input in Dockerfile

[cgi-ulb]

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[Pold87]

Thank you for your pull request! I encountered two small issues when testing your version:

1. The command docker-compose up failed with the error:

ERROR: Service 'academickeywordoccurrence' failed to build: COPY failed: file not found in build context or excluded by .dockerignore: stat poetry.lock: file does not exist

2. The command python extract_occurrences.py '<keyword>' <start date> <end date> does not work anymore. It will prompt for user input and then fail with Error: Got unexpected extra arguments. Maybe changing option to argument in click would work?

Another thing that I did not check yet in detail is whether quoted strings still work with the command line prompt (e.g. "bitcoin mining").