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## Description
Edited cheat sheet pdf directly to add the context "." at the end of
docker build example.
https://deploy-preview-21806--docsdocker.netlify.app/get-started/docker_cheatsheet.pdf
## Related issues or tickets
Closes#18575
## Reviews
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- [ ] Editorial review
Signed-off-by: Craig <craig.osterhout@docker.com>