fix outdated kafka docker file

kafka/Dockerfile

@@ -1,13 +1,15 @@
 FROM openjdk:11-jre-slim
 
 RUN apt update && \
-    apt install -y wget
+    apt install -y wget curl jq
 
-ARG KAFKA_VERSION=2.3.0
 RUN mkdir /kafka
 WORKDIR /kafka
-RUN wget http://miroir.univ-lorraine.fr/apache/kafka/$KAFKA_VERSION/kafka_2.11-$KAFKA_VERSION.tgz
-RUN tar xzf kafka_2.11-$KAFKA_VERSION.tgz --strip-components=1 
+
+# download kafka
+COPY download.sh /kafka
+RUN /kafka/download.sh "/kafka/kafka.tgz"
+RUN tar xzf /kafka/kafka.tgz --strip-components=1
 
 VOLUME /tmp/kafka-logs
 

kafka/download.sh

@@ -0,0 +1,19 @@
+#!/bin/sh -e
+# download kafka, code from https://github.com/wurstmeister/kafka-docker/blob/master/download-kafka.sh
+
+KAFKA_VERSION=2.7.0
+SCALA_VERSION=2.12
+
+FILENAME="kafka_${SCALA_VERSION}-${KAFKA_VERSION}.tgz"
+
+url=$(curl --stderr /dev/null "https://www.apache.org/dyn/closer.cgi?path=/kafka/${KAFKA_VERSION}/${FILENAME}&as_json=1" | jq -r '"\(.preferred)\(.path_info)"')
+
+# Test to see if the suggested mirror has this version, currently pre 2.1.1 versions
+# do not appear to be actively mirrored. This may also be useful if closer.cgi is down.
+if [[ ! $(curl -s -f -I "${url}") ]]; then
+    echo "Mirror does not have desired version, downloading direct from Apache"
+    url="https://archive.apache.org/dist/kafka/${KAFKA_VERSION}/${FILENAME}"
+fi
+
+echo "Downloading Kafka from $url to $1"
+wget "${url}" -O "$1"