Fix TODO in dockerfile #450

Job	Run time
build-docker-image (18, 3, 6, debian, trixie, slim)	1m 14s
scan_image	2m 11s
push-internal-pr-images	39s
run-scenario-tests (extensions)	1m 17s
run-scenario-tests (streaming_replication)	9m 26s
run-scenario-tests (collations)	1m 55s
run-scenario-tests (init_scripts)	1m 48s
run-scenario-tests (datadir_init)	8m 51s
run-scenario-tests (multiple_databases)	2m 43s
run-scenario-tests (logical_replication)	4m 2s
	34m 6s

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