This repository provides a Docker image that bundles together Apache Kafka and Zookeeper. This allows to easily use Apache Kafka in CI pipelines without the need to set up a dedicated Zookeeper service container.

The Kafka Docker container can be run as follows, exposing the Kafka broker on port 9092:

docker run -p 9092:9092 ghcr.io/borchero/kafka:latest

You can customize the behavior of the Kafka Docker container by setting environment variables:

• KAFKA_ADVERTISED_HOST: The hostname that Kafka should listen to. Defaults to localhost.
• KAFKA_CREATE_TOPICS: A list of comma-separated topic names that are automatically created after Kafka has started up. Each topic is created with 3 partitions and a replication factor of 1. Defaults to no topics.
• KAFKA_LISTENERS, KAFKA_PROTOCOL_MAP, KAFKA_ADVERTISED_LISTENERS, KAFKA_INTER_BROKER_LISTENER: These variables should be set in tandem (instead of KAFKA_ADVERTISED_HOST) to specify the configurations values listeners, listener.security.protocol.map, advertised.listeners, and inter.broker.listener.name, respectively.