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6b326744d8
- Make cosmetic fixes in help output. - There is usually no need for putting variables inside quotes in assignments. - Use [[ ]] to avoid putting everything into strings. - Use arrays instead of relying on strings to be split on whitespace as it was the case for invoking docker and getting GPG volume flags for docker. - Make sure that some cleanup and trap strings quote variables properly. - Add a "call_docker" function to avoid dealing with "docker" and a new "docker_a" variables when willing to invoke docker. The "docker" variable rather shouldn't be used, but it is still there in case some other scripts were using it.