Update ci matrix and .NET installation instructions. (#364) #651

Job	Run time
Verify tests pass (docker.io/library/alpine:latest, 8.0)	8m 56s
Verify tests pass (docker.io/library/alpine:edge, 8.0)	8m 9s
Verify tests pass (quay.io/centos/centos:stream9, 8.0)	9m 7s
Verify tests pass (quay.io/centos/centos:stream9, 9.0)	9m 33s
Verify tests pass (quay.io/centos/centos:stream10, 8.0)	8m 59s
Verify tests pass (quay.io/centos/centos:stream10, 9.0)	10m 20s
Verify tests pass (registry.fedoraproject.org/fedora:40, 8.0)	8m 15s
Verify tests pass (registry.fedoraproject.org/fedora:40, 9.0)	12m 1s
Verify tests pass (registry.fedoraproject.org/fedora:41, 8.0)	8m 32s
Verify tests pass (registry.fedoraproject.org/fedora:41, 9.0)	10m 9s
Verify tests pass (registry.fedoraproject.org/fedora:rawhide, 8.0)	8m 14s
Verify tests pass (registry.fedoraproject.org/fedora:rawhide, 9.0)	8m 49s
Verify tests pass (registry.access.redhat.com/ubi8, 8.0)	8m 28s
Verify tests pass (registry.access.redhat.com/ubi8, 9.0)	8m 53s
Verify tests pass (registry.access.redhat.com/ubi9, 8.0)	7m 56s
Verify tests pass (registry.access.redhat.com/ubi9, 9.0)	8m 22s
	2h 24m 43s

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