A lot of special characters and non-English will display as gibberish if you don't enable UTF-8 locale which is not done by default.
An example of things you may see withoutUTF-8
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You can do it this way when connecting to the console.
docker exec -it -e LANG=C.UTF-8
If you are already on the console you can do this:
export LANG=C.UTF-8........