Docker image cleanup #16

Job	Run time
cleanup (rhel-9.4)	8s
cleanup (debian-bookworm)	14s
cleanup (tools-rippled-documentation)	4s
cleanup (debian-bullseye)	4s
cleanup (rhel-9.6)	19s
cleanup (gcc)	4s
cleanup (tools-rippled-clang-format)	4s
cleanup (tools-rippled-pre-commit)	6s
cleanup (ubuntu-noble)	26s
cleanup (tools-rippled-prettier)	4s
cleanup (ubuntu-jammy)	5s
	1m 38s

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