An image that is not public
What docker login writes on a server and in what form, why a deploy token is the only credential a machine should hold, and how to get it there without leaking it.
20 minutesTechnical content last reviewed on 17 Sept 2026
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What this lesson builds
- Running an application in containers without losing its data
- Keeping secrets out of the places that publish them
End of the course
Deploying: releases, the switch and rolling back
Get the code onto the server, switch in a single operation, and be able to go back — including when the verification fails.
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