Services can now be given an explicit hostname via Service.withHostname by @vito in #8641
Previously, you could only express a DAG of services, because each service hostname was derived from the service's configuration, and changing a service to point to another service would inherently change that service's configuration.

Now you can set your own hostnames ahead of time, tell your services about each other's hostnames, and start they manually.

Services with custom hostnames are namespaced to the module that starts them, to prevent conflicts.

Allow expanding environment variables in more Container functions by @rajatjindal in #8427

Apply ignore function parameter metadata on Directory passed from the CLI by @TomChv in #8436
This extends the usage of ignore to not only dir loaded with defaultPath but directory passed as function's param from the CLI.

Note: ignore patterns are not applied for module to module calls.

Enabled Container.withMountedTemp size configuration by @cwlbraa in #8652

Add noInit option to Container.withExec to support disabling automatic init process by @sipsma in #8656
Use cases that strictly require the user exec is PID 1 of the container are now supported by setting noInit to true.