Add a CI job to build a Docker manifest #33

Job	Run time
linux-anvil-comp7:latest ()	3m 27s
linux-anvil-cos7-x86_64:latest ()	3m 21s
linux-anvil-ppc64le:latest ()	10m 56s
linux-anvil-aarch64:latest ()	15m 9s
linux-anvil-cuda:11.0 ()	6m 46s
linux-anvil-cuda:11.1 ()	7m 41s
linux-anvil-cuda:11.2 ()	6m 37s
linux-anvil-cuda:11.3 ()	6m 25s
linux-anvil-cuda:11.4 ()	7m 12s
linux-anvil-cuda:11.5 ()	6m 29s
linux-anvil-cuda:11.6 ()	6m 31s
linux-anvil-cuda:11.7 ()	6m 8s
linux-anvil-cuda:11.8 ()	7m 36s
linux-anvil-ppc64le-cuda:11.0 ()	16m 27s
linux-anvil-ppc64le-cuda:11.1 ()	20m 40s
linux-anvil-ppc64le-cuda:11.2 ()	18m 43s
linux-anvil-ppc64le-cuda:11.3 ()	16m 26s
linux-anvil-ppc64le-cuda:11.4 ()	16m 32s
linux-anvil-ppc64le-cuda:11.5 ()	15m 59s
linux-anvil-ppc64le-cuda:11.6 ()	6h 0m 15s
linux-anvil-ppc64le-cuda:11.7 ()	18m 44s
linux-anvil-ppc64le-cuda:11.8 ()	25m 9s
linux-anvil-aarch64-cuda:11.0 ()	16m 38s
linux-anvil-aarch64-cuda:11.1 ()	20m 27s
linux-anvil-aarch64-cuda:11.2 ()	18m 40s
linux-anvil-aarch64-cuda:11.3 ()	16m 29s
linux-anvil-aarch64-cuda:11.4 ()	17m 9s
linux-anvil-aarch64-cuda:11.5 ()	16m 40s
linux-anvil-aarch64-cuda:11.6 ()	18m 18s
linux-anvil-aarch64-cuda:11.7 ()	18m 14s
linux-anvil-aarch64-cuda:11.8 ()	18m 35s
linux-anvil-alma-x86_64:8 (amd64)	2m 50s
linux-anvil-alma-aarch64:8 (arm64)	10m 0s
linux-anvil-alma-ppc64le:8 (ppc64le)	9m 38s
${{ matrix.docker-registry }}/${{ matrix.cfg.DOCKER_MANIFEST }}:${{ matrix.cfg.DOCKER_TAG }}	0s
	13h 6m 51s

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