add link to explain docker builds and auto setup
# Build docker image
+Temporal builds 4 Docker images with [every release](https://github.com/temporalio/temporal/releases): Server, Server [with Auto Setup](https://docs.temporal.io/blog/auto-setup), tctl CLI, and Admin-Tools. There are [other builds e.g. for CI](https://hub.docker.com/u/temporalio) as well.
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## Prerequisites
To build docker image:
