- more tidying up

- setting up distribution plugin
- using more variables for mod config

modules/infra-kafka-cluster/src/kafka.Dockerfile

@@ -0,0 +1,66 @@
+ARG KAFKA_DL_URL=https://dlcdn.apache.org/kafka/3.0.0/kafka_2.13-3.0.0.tgz
+
+## builder ##
+FROM debian:11-slim as Kafka-Download
+ARG KAFKA_DL_URL
+
+WORKDIR /kafka
+
+RUN apt-get update && apt-get install -y \
+  curl \
+  && rm -rf /var/lib/apt/lists/*
+
+RUN echo "Downloading Kafka from $KAFKA_DL_URL" \
+ && curl "$KAFKA_DL_URL" | tar --strip-components=1 -xz \
+ && echo "Finished Kafka download" \
+ && ls -la
+
+
+## Kafka ##
+# KRaft (aka KIP-500) mode Preview Release
+# https://github.com/apache/kafka/blob/041b76dc57f096be2a2d7532d917122992bff6e2/config/kraft/README.md
+FROM openjdk:11 as kafka-kraft
+
+WORKDIR /kafka
+
+COPY --from=Kafka-Download /kafka .
+
+# hardcoded for now, based on values from './config/kraft/server.properties'
+# log.dirs
+VOLUME /tmp/kraft-combined-logs
+# listeners, controller.quorum.voters
+EXPOSE 9092 9093
+
+# Generate a cluster ID (must use this .sh to generate a UUID)
+RUN echo "$(./bin/kafka-storage.sh random-uuid)" > cluster_id \
+ && echo "Generated a Kafka Cluster ID: $(cat cluster_id)"
+
+# Format storage directories
+RUN ./bin/kafka-storage.sh format \
+  --ignore-formatted \
+  --config ./config/kraft/server.properties \
+  --cluster-id "$(cat cluster_id)"
+
+COPY ./kafka-server.properties ./server.properties
+
+# launch the broker in KRaft mode, which means that it runs without ZooKeeper
+ENTRYPOINT ["./bin/kafka-server-start.sh", "./server.properties"]
+
+
+### Kafka Connect ##
+#FROM openjdk:11 as kafka-connect
+## https://github.com/confluentinc/cp-docker-images/blob/5.3.3-post/debian/kafka-connect-base/Dockerfile
+#
+#ENV COMPONENT=kafka-connect
+#
+#WORKDIR /kafka-connect
+#
+#COPY --from=Kafka-Download /kafka .
+#
+## Default kafka-connect rest.port
+#EXPOSE 8083
+#
+#VOLUME ["/etc/${COMPONENT}/jars", "/etc/${COMPONENT}/secrets"]
+#
+## launch the broker in KRaft mode, which means that it runs without ZooKeeper
+#ENTRYPOINT ["./bin/connect-standalone.sh", "./config/connect-standalone.properties"]