* fix: Store machine id on connection entries so it can be removed when machine is
* Add "GetContextOverrideOrCurrent" helper method to cli and use in `uc machine rm` to clean up connections
* Make `--context` flag a global option and remove duplication
* Remove unused dns showOptions struct
* First pass of refactoring "active context" determination and validation
* Undo some refactoring in cli.go to keep diff more focused
* feat: Interactive uc command to select preferred cluster connection
https://github.com/psviderski/uncloud/issues/125
* Simplify connection selection and reordering by using the index instead of a pointer
* Move connection reordering logic to a new SetDefaultConnection on context
* feat: Adding a "nearest.service.local" mode to internal DNS
* Pass listenAddr to internal DNS server (rather than calling into network.MachineIP)
Also adds an exact round-robin via "rr.{service}" mode. Not sure we want that over random or not, though.
* Remove the resolved count and rotating round-robin. "rr.name" mode is now the same as default with random shuffle.
* Add test on nearest internal DNS lookup
* Add docs on internal DNS order modes
* feat: support compose.yaml `service.gpus` and `service.deploy.resources.reservations.devices` DeviceRequests to Docker container
* Fix lint error
* Adjust test comments to work with linter
* Rename DeviceRequests to DeviceReservations to be more consistent with compose nomenclature
* Device reservation changes are immutable and should trigger a container recreate rather than update
* Set machine id in service container ENV
* Add machine id to clone of the container's env map to avoid exposing serialization format
* fix: panic on setting UNCLOUD_MACHINE_ID env var when Env is nil in the spec
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Co-authored-by: Pasha Sviderski <me@psviderski.name>
