Why do we need to make changes to the deprecated class org.testcontainers.containers.ClickHouseContainer?
Since we already have org.testcontainers.clickhouse.ClickHouseContainer, whch only supports the new image, wouldn't the next logical step to instead remove the deprecated class org.testcontainers.containers.ClickHouseContainer?

And I guess we can keep the change for the JDBC driver either way.

Since I do not know who is using that did not want to break the code
Just making sure we announced that the deprecated class would be removed in the next release?

org.testcontainers.containers.ClickHouseContainer is deprecated and the changes submitted are breaking changes for those still using it. If you are looking for to use only clickhouse/clickhouse-server image then move to org.testcontainers.clickhouse.ClickHouseContainer. We have an open PR #8738 that moves the ClickHouseProvider to use clickhouse/clickhouse-server instead of the previous one but it has not been merged because the existing implementation will break the behavior for existing users.

I'd suggest to discuss the ideas and look into existing issues and open PRs before submitting a PR. We know you have to invest time in order to make those changes.