This will take a few seconds, in which the container starts, xle parses the sentences and the results are written to a file. Afterwards, the container terminates.
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<details>Advanced tips</details>
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<summary>Advanced tips</summary>
Note that the `xle` specified in the `docker run` command is the name of the tag you've given the image when building, _not_ the command to be executed (although under the hood the container will call a Linux command also called `xle`).
