driver.SetConfig is not appropriate for starting up reconciler
goroutine. Some ephemeral driver instances are created for validating
config and we ought not to side-effecting goroutines for those.
We currently lack a lifecycle hook to inject these, so I picked the
`Fingerprinter` function for now, and reconciler should only run after
fingerprinter started.
Use `sync.Once` to ensure that we only start reconciler loop once.
This commit causes the docker driver to return undetected before it
first establishes a connection to the docker daemon.
This fixes a bug where hosts without docker installed would return as
unhealthy, rather than undetected.
- docker fingerprint issues a docker api system info call to get the
list of supported OCI runtimes.
- OCI runtimes are reported as comma separated list of names
- docker driver is aware of GPU runtime presence
- docker driver throws an error when user tries to run container with
GPU, when GPU runtime is not present
- docker GPU runtime name is configurable
