Document how to run a worker on elements

Originally described in https://gitlab.com/teklia/arkindex/doc/-/issues/18 but now this kind of documentation is written here.

Explain how to run a worker on an Arkindex instance. A first work was done in this page.

changed milestone to %ML Prod - September 2022 n°1

added Documentation P3 labels

changed milestone to %ML Prod - September 2022 n°2

changed milestone to %ML Prod - October 2022 n°1

changed milestone to %ML Prod - October 2022 n°2

changed milestone to %ML Prod - November 2022 n°1

changed milestone to %ML Prod - November 2022 n°2

changed milestone to %ML Prod - Next

changed the description

changed milestone to %0.3.6

changed milestone to %0.3.7

Might not be needed because we already have https://doc.arkindex.org/howto/run-process/

changed milestone to %0.4.0

assigned to @mblanco

unassigned @mblanco

closed