Adapt `AlpakkaKafkaContainer` to Testcontainers 1.15

[ennru]

The upcoming Testcontainers 1.15 version brings important improvements to the framework.
https://github.com/testcontainers/testcontainers-java/releases

As AlpakkaKafkaContainer replaces KafkaContainer it needs to be updated with the latest changes from Testcontainers. Specifically, testcontainers/testcontainers-java#3293 adapts it to work with the Kafka broker bundled in Confluent Platform 6.0.0.

[agemooij]

Any idea when this issue can be fixed and released?

All our Kafka tests started failing on my machine after I innocently said yes to a new stable release (2.5.0.0) of the docker for Mac distro. This triggered an issue in testcontainers that causes it to fail catastrophically.

I'll try downgrading my docker client to pre-2.4 for now but it would be great if this incompatibility could be fixed ASAP.

[ennru]

With #1257 Alpakka Kafka uses Testcontainers 1.15.0.

@agemooij I would expect overriding the Testcontainers version in 3.0.0-M1 works. We'd want to progress a bit more before releasing M2.

[agemooij]

OK, thanks! I'll try that. The Docker for Mac downgrade worked for me as well but I assume quite a few people will start running into this as they upgrade their systems so probably good to clearly mention it in the release notes and perhaps even as a known issue for the 2.0 releases.

[agemooij]

@ennru I guess you meant the 2.1.0-M1 release? Or are you going to relabel it to 3.0 for M2?