Make last_restore_file variable in docker-entrypoint.sh #2433

Job	Run time
debian-build (focal)	4m 0s
build (3.8)	1m 26s
build (3.9)	1m 22s
build (3.10)	1m 22s
build (3.11)	1m 14s
k8ssandra-CreateSingleMedusaJob	15m 19s
k8ssandra-CreateSingleDseSearchDatacenterCluster	15m 19s
integration-tests (3.9, local, 2.2.19)	20m 4s
integration-tests (3.9, local, 3.11.11)	20m 7s
integration-tests (3.9, local, 4.0.0)	21m 33s
integration-tests (3.9, s3, 2.2.19)	2m 15s
integration-tests (3.9, s3, 4.0.0)	1m 22s
integration-tests (3.9, gcs, 2.2.19)	1m 49s
integration-tests (3.9, gcs, 4.0.0)	1m 48s
integration-tests (3.9, minio, 2.2.19)	11m 57s
integration-tests (3.9, minio, 4.0.0)	11m 17s
integration-tests (3.9, azure, 2.2.19)	1m 18s
integration-tests (3.9, azure, 4.0.0)	1m 40s
integration-tests (3.9, azure-hierarchical, 2.2.19)	1m 40s
integration-tests (3.9, azure-hierarchical, 4.0.0)	2m 4s
integration-tests (3.11, 4.0.0, gcs, false)	1m 19s
integration-tests (3.10, 4.0.0, gcs, false)	1m 36s
integration-tests (3.8, 4.0.0, gcs, false)	1m 34s
publish-docker-master	0s
publish-debian	0s
publish-docker	0s
publish-pypi	0s
	2h 23m 25s

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