Allow setting temp dir used by campaigns through flag/env var #318
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This addresses a customer report in which
src campaigns applycouldn'tbe run in CI because the docker-in-docker setup prohibits mounting
/tmpinto containers.It also fixes parts of
#316, since the temporary
directory is also where the logs are stored, but we might want to split
those locations up (in case a user wants to keep logs but not inside the
temporary directory).