Merge pull request #6575 from trws/docker-cleanup #10234

Job	Run time
python linting	31s
validate commits	0s
spelling	6s
Generate build matrix	5s
bookworm - arm64	2m 50s
bookworm - test-install	12m 25s
bookworm - 32 bit	13m 25s
noble - arm64	2m 56s
noble - test-install	13m 9s
el9 - arm64	2m 52s
el9 - test-install	12m 56s
alpine - arm64	2m 31s
alpine - test-install	12m 50s
fedora40 - arm64	2m 42s
fedora40 - test-install	12m 8s
jammy - test-install	12m 30s
focal - py3.8	17m 2s
bookworm - gcc-12,content-s3,distcheck	19m 42s
fedora40 - clang-18	16m 48s
coverage	23m 58s
el8 - ascii	20m 6s
el8 - test-install	14m 7s
el8 - system,coverage	6m 57s
inception	21m 40s
flux-sched check	6m 45s
flux-pam check	4m 28s
flux-accounting check	4m 50s
macos build only	3m 4s
flux-pmix check	12m 50s
Generate docker manifest	9s
	4h 36m 22s

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