Docker image cleanup #36

Job	Run time
cleanup (debian-bullseye)	1m 17s
cleanup (debian-bookworm)	1m 51s
cleanup (rhel-8)	24s
cleanup (gcc)	4s
cleanup (rhel-9)	46s
cleanup (tools-rippled-clang-format)	4s
cleanup (tools-rippled-prettier)	6s
cleanup (tools-rippled-documentation)	7s
cleanup (tools-rippled-pre-commit)	4s
cleanup (ubuntu-jammy)	15s
cleanup (ubuntu-noble)	1m 13s
cleanup (rhel-10)	24s
	6m 35s

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