arangodb-docker: Error when specifying a storage engine (rocksdb)

I’m trying to use another storage engine, RocksDB. I’m passing: --server.storage-engine rocksdb

Which results in:

FATAL {startup} content of 'ENGINE' file '/var/lib/arangodb3/ENGINE' and command-line/configuration option value do not match: 'mmfiles' != 'rocksdb'. please validate the command-line/configuration option value of '--server.storage-engine' or use a different database directory if the change is intentional

Which is I believe because that argument is not passed through when the database is initialised: https://github.com/arangodb/arangodb-docker/blob/4f5bb422c58f7d7e8f3477470fbabe8253c3fdae/jessie/3.1.8/docker-entrypoint.sh#L41-L46