Fix runtime errors, fix typo, add dockerfile

[changh95]

@saurabh1002 and rest of the PR Bonn team, thank you very much for making nice software!

I'm submitting a PR based on 3 changes

• Fixing a minor typo
• Fixing 2 runtime errors
  • self.closure_distance_threshold and self.results are not initialized when using a dataset without GT data (Missing parameters when self._eval == False #2)
  • Fixing a bad progress monitoring problem (CLI replication when creating local maps #1)
• Adding a dockerfile
  • This might be a personal preference, but I've seen several cases avoiding installing OpenCV in the system, as it sometimes crashes with other versions of OpenCV or other projects. Docker is often used to make an isolated environment to solve this kind of issue, so I've packaged the entire MapClosures in a Docker image.
  • However, this change might go against the idea of KISS-ICP being super easy to use with just pip3 install kiss-icp, so it's totally understandable if you think this change shouldn't be merged into the main branch :)

Output

Works well on Docker :)

[saurabh1002]

Thanks a lot @changh95 for using our code and submitting Issue and a PR so fast. I will merge it soon, just leaving some comments about it below, and request you to make these changes before I merge.

1. Regarding Issue CLI replication when creating local maps #1, it was just a remaining print statement that I forgot to delete, you can just delete that line instead of commenting it out.
2. Sorry for Issue Missing parameters when self._eval == False #2, just some negligence on my side, will merge your PR with some modifications suggested on the file
3. We will provide a docker support very soon, so I am not merging the Dockerfile and related updates in README from Fix runtime errors, fix typo, add dockerfile #3

[changh95]

Applied comments as requested, @saurabh1002
Shall I remove the docker image from the branch? or do you have access to my commit history to remove the docker-related commit?

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EDIT: I removed the Dockerfile!