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I'm fine to add the Dockerfile, but the PR shows 43 files changed? I think it should just have only the Dockerfile as a new file with no changes to the other files.

First commit from the PR is doing the minimum to get a Dockerfile running though I agree, the PR is full of other modifications.

Feel free to use as inspiration. Best to inspect commit per commit, more specifically 323b55e and f1bc0f8.