[Nebius] Add Docker support for Nebius cloud #22204

Job	Run time
limited-deps-test (3.8, tests/test_cli.py)	1m 43s
failover-test (3.10, tests/test_failover.py)	1m 30s
limited-deps-test (3.8, tests/test_jobs_and_serve.py)	28s
python-test (3.8, tests/unit_tests)	2m 27s
python-test (3.8, tests/test_config.py)	57s
python-test (3.8, tests/test_cli.py)	2m 4s
python-test (3.8, tests/test_api.py)	57s
python-test (3.8, tests/test_optimizer_random_dag.py)	1m 31s
python-test (3.8, tests/test_optimizer_dryruns.py)	7m 31s
python-test (3.8, tests/test_list_accelerators.py)	1m 19s
python-test (3.8, tests/test_storage.py)	49s
python-test (3.8, tests/test_jobs.py)	2m 47s
python-test (3.8, tests/test_global_user_state.py)	52s
python-test (3.8, tests/test_yaml_parser.py)	54s
python-test (3.8, tests/test_wheels.py)	1m 0s
python-test (3.8, tests/test_jobs_and_serve.py)	55s
	27m 44s

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