What does these flag do?

General
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docker run -ti -e VIRTUAL_HOST=localhost -p 80:80 -p 443:443 -p 22:22 -v tuleap-data:/data enalean/tuleap-aio

what does ti flag do ?

what does -e flag do ?

Is there any guide book where I could find what these tags means ?

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-t              : Allocate a pseudo-tty
-i              : Keep STDIN open even if not attached
-e             : Set environment variable
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Thanks …that is very much helpful.

Could you please explain this part

what this snippet doing here ? please explain in layman’s words

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