Merge pull request #273 from jakirkham/reuse_cos7_img #495

Job	Run time
Keep alive	0s
linux-anvil-cos7-x86_64:latest (amd64)	3m 0s
linux-anvil-ppc64le:latest (ppc64le)	9m 42s
linux-anvil-aarch64:latest (arm64)	14m 40s
linux-anvil-cuda:11.8 (amd64)	6m 31s
linux-anvil-ppc64le-cuda:11.8 (ppc64le)	16m 42s
linux-anvil-aarch64-cuda:11.8 (arm64)	17m 5s
linux-anvil-alma-x86_64:8 (amd64)	2m 45s
linux-anvil-alma-aarch64:8 (arm64)	10m 20s
linux-anvil-alma-ppc64le:8 (ppc64le)	9m 10s
	1h 29m 55s

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