Adding precautionary check for DockerHub registry availability in dev container cli #3850

Job	Run time
CLI	44s
Tests Matrix (src/test/container-features/featuresCLICommands.test.ts)	3m 3s
Tests Matrix (src/test/container-features/containerFeaturesOrder.test.ts)	53s
Tests Matrix (src/test/cli.exec.nonBuildKit.2.test.ts)	4m 58s
Tests Matrix (src/test/cli.build.test.ts)	9m 22s
Tests Matrix (src/test/cli.exec.buildKit.1.test.ts)	5m 55s
Tests Matrix (src/test/cli.exec.nonBuildKit.1.test.ts)	5m 21s
OCI Implementation Registry Compatibility	1m 8s
Tests Matrix (--exclude src/test/container-features/containerFeaturesOrder.test.ts --exclude src/...	6m 11s
Tests Matrix (src/test/container-features/e2e.test.ts)	3m 58s
Tests Matrix (src/test/cli.exec.buildKit.2.test.ts)	5m 44s
Tests Matrix (src/test/cli.podman.test.ts)	2m 29s
Tests Matrix (src/test/cli.up.test.ts)	5m 37s
Tests Matrix (src/test/imageMetadata.test.ts)	7m 15s
Tests Matrix (src/test/container-features/containerFeaturesOCIPush.test.ts)	1m 4s
Tests Matrix (src/test/cli.test.ts)	1m 4s
Tests	4s
	1h 4m 50s

Provide feedback