From 01d53f3a44ece8567fe7f2691a6c2793594f32a6 Mon Sep 17 00:00:00 2001
From: KrishVora01 <156789009+KrishVora01@users.noreply.github.com>
Date: Tue, 11 Jun 2024 16:20:47 +0530
Subject: [PATCH] KAFKA-16373: KIP-1028: Adding 3.7.0 docker official images
 static assets (#16267)

This PR aims to add the static Dockerfile and scripts for AK 3.7.0 version. As mentioned in KIP-1028 this PR aims to start the release of the kafka:3.7.0 Docker Official image. This will also help us validate the process and allow us to address any changes suggested by Dockerhub before the 3.8.0 release.

The static Dockerfile and scripts have been generated via the github actions workflows and scripts added as part of https://github.com/apache/kafka/pull/16027. The reports of build and testing the 3.7.0 Docker official image are below.

Reviewers: Manikumar Reddy <manikumar.reddy@gmail.com>, Vedarth Sharma <vesharma@confluent.io>
---
 .../3.7.0/jvm/Dockerfile                      |  95 ++++++++++++++
 .../3.7.0/jvm/jsa_launch                      |  49 +++++++
 .../docker_official_images/3.7.0/jvm/launch   |  68 ++++++++++
 .../jvm/resources/common-scripts/bash-config  |  23 ++++
 .../jvm/resources/common-scripts/configure    | 121 ++++++++++++++++++
 .../common-scripts/configureDefaults          |  28 ++++
 .../3.7.0/jvm/resources/common-scripts/run    |  38 ++++++
 7 files changed, 422 insertions(+)
 create mode 100755 docker/docker_official_images/3.7.0/jvm/Dockerfile
 create mode 100755 docker/docker_official_images/3.7.0/jvm/jsa_launch
 create mode 100755 docker/docker_official_images/3.7.0/jvm/launch
 create mode 100755 docker/docker_official_images/3.7.0/jvm/resources/common-scripts/bash-config
 create mode 100755 docker/docker_official_images/3.7.0/jvm/resources/common-scripts/configure
 create mode 100755 docker/docker_official_images/3.7.0/jvm/resources/common-scripts/configureDefaults
 create mode 100755 docker/docker_official_images/3.7.0/jvm/resources/common-scripts/run

diff --git a/docker/docker_official_images/3.7.0/jvm/Dockerfile b/docker/docker_official_images/3.7.0/jvm/Dockerfile
new file mode 100755
index 0000000000000..7aa054a4f7b2e
--- /dev/null
+++ b/docker/docker_official_images/3.7.0/jvm/Dockerfile
@@ -0,0 +1,95 @@
+###############################################################################
+#  Licensed to the Apache Software Foundation (ASF) under one
+#  or more contributor license agreements.  See the NOTICE file
+#  distributed with this work for additional information
+#  regarding copyright ownership.  The ASF licenses this file
+#  to you under the Apache License, Version 2.0 (the
+#  "License"); you may not use this file except in compliance
+#  with the License.  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+# limitations under the License.
+###############################################################################
+
+FROM eclipse-temurin:21-jre-alpine AS build-jsa
+
+USER root
+
+# Get Kafka from https://downloads.apache.org/kafka, url passed as env var, for version 3.7.0
+ENV kafka_url https://downloads.apache.org/kafka/3.7.0/kafka_2.13-3.7.0.tgz
+
+COPY jsa_launch /etc/kafka/docker/jsa_launch
+
+RUN set -eux ; \
+    apk update ; \
+    apk upgrade ; \
+    apk add --no-cache wget gcompat gpg gpg-agent procps bash; \
+    mkdir opt/kafka; \
+    wget -nv -O kafka.tgz "$kafka_url"; \
+    wget -nv -O kafka.tgz.asc "$kafka_url.asc"; \
+    tar xfz kafka.tgz -C /opt/kafka --strip-components 1; \
+    wget -nv -O KEYS https://downloads.apache.org/kafka/KEYS; \
+    gpg --import KEYS; \
+    gpg --batch --verify kafka.tgz.asc kafka.tgz
+
+# Generate jsa files using dynamic CDS for kafka server start command and kafka storage format command
+RUN /etc/kafka/docker/jsa_launch
+
+
+FROM eclipse-temurin:21-jre-alpine
+
+# exposed ports
+EXPOSE 9092
+
+USER root
+
+# Get Kafka from https://downloads.apache.org/kafka, url passed as env var, for version 3.7.0
+ENV kafka_url https://downloads.apache.org/kafka/3.7.0/kafka_2.13-3.7.0.tgz
+ENV build_date 2024-06-10
+
+
+LABEL org.label-schema.name="kafka" \
+      org.label-schema.description="Apache Kafka" \
+      org.label-schema.build-date="${build_date}" \
+      org.label-schema.vcs-url="https://github.com/apache/kafka" \
+      maintainer="Apache Kafka"
+
+RUN set -eux ; \
+    apk update ; \
+    apk upgrade ; \
+    apk add --no-cache wget gcompat gpg gpg-agent procps bash; \
+    mkdir opt/kafka; \
+    wget -nv -O kafka.tgz "$kafka_url"; \
+    wget -nv -O kafka.tgz.asc "$kafka_url.asc"; \
+    tar xfz kafka.tgz -C /opt/kafka --strip-components 1; \
+    wget -nv -O KEYS https://downloads.apache.org/kafka/KEYS; \
+    gpg --import KEYS; \
+    gpg --batch --verify kafka.tgz.asc kafka.tgz; \
+    mkdir -p /var/lib/kafka/data /etc/kafka/secrets; \
+    mkdir -p /etc/kafka/docker /usr/logs /mnt/shared/config; \
+    adduser -h /home/appuser -D --shell /bin/bash appuser; \
+    chown appuser:appuser -R /usr/logs /opt/kafka /mnt/shared/config; \
+    chown appuser:root -R /var/lib/kafka /etc/kafka/secrets /etc/kafka; \
+    chmod -R ug+w /etc/kafka /var/lib/kafka /etc/kafka/secrets; \
+    cp /opt/kafka/config/log4j.properties /etc/kafka/docker/log4j.properties; \
+    cp /opt/kafka/config/tools-log4j.properties /etc/kafka/docker/tools-log4j.properties; \
+    cp /opt/kafka/config/kraft/server.properties /etc/kafka/docker/server.properties; \
+    rm kafka.tgz kafka.tgz.asc KEYS; \
+    apk del wget gpg gpg-agent; \
+    apk cache clean;
+
+COPY --from=build-jsa kafka.jsa /opt/kafka/kafka.jsa
+COPY --from=build-jsa storage.jsa /opt/kafka/storage.jsa
+COPY --chown=appuser:appuser resources/common-scripts /etc/kafka/docker
+COPY --chown=appuser:appuser launch /etc/kafka/docker/launch
+
+USER appuser
+
+VOLUME ["/etc/kafka/secrets", "/var/lib/kafka/data", "/mnt/shared/config"]
+
+CMD ["/etc/kafka/docker/run"]
diff --git a/docker/docker_official_images/3.7.0/jvm/jsa_launch b/docker/docker_official_images/3.7.0/jvm/jsa_launch
new file mode 100755
index 0000000000000..904fbbee42ca7
--- /dev/null
+++ b/docker/docker_official_images/3.7.0/jvm/jsa_launch
@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+KAFKA_CLUSTER_ID="$(opt/kafka/bin/kafka-storage.sh random-uuid)"
+TOPIC="test-topic"
+
+KAFKA_JVM_PERFORMANCE_OPTS="-XX:ArchiveClassesAtExit=storage.jsa" opt/kafka/bin/kafka-storage.sh format -t $KAFKA_CLUSTER_ID -c opt/kafka/config/kraft/server.properties
+
+KAFKA_JVM_PERFORMANCE_OPTS="-XX:ArchiveClassesAtExit=kafka.jsa" opt/kafka/bin/kafka-server-start.sh opt/kafka/config/kraft/server.properties &
+
+check_timeout() {
+    if [ $TIMEOUT -eq 0 ]; then
+        echo "Server startup timed out"
+        exit 1
+    fi
+    echo "Check will timeout in $(( TIMEOUT-- )) seconds"
+    sleep 1
+}
+
+opt/kafka/bin/kafka-topics.sh --create --topic $TOPIC --bootstrap-server localhost:9092
+[ $? -eq 0 ] || exit 1
+
+echo "test" | opt/kafka/bin/kafka-console-producer.sh --topic $TOPIC --bootstrap-server localhost:9092
+[ $? -eq 0 ] || exit 1
+
+opt/kafka/bin/kafka-console-consumer.sh --topic $TOPIC --from-beginning --bootstrap-server localhost:9092 --max-messages 1 --timeout-ms 20000
+[ $? -eq 0 ] || exit 1
+
+opt/kafka/bin/kafka-server-stop.sh
+
+# Wait until jsa file is generated
+TIMEOUT=20
+until [ -f /kafka.jsa ]
+do
+    check_timeout
+done
\ No newline at end of file
diff --git a/docker/docker_official_images/3.7.0/jvm/launch b/docker/docker_official_images/3.7.0/jvm/launch
new file mode 100755
index 0000000000000..6c4ca1d2e05f5
--- /dev/null
+++ b/docker/docker_official_images/3.7.0/jvm/launch
@@ -0,0 +1,68 @@
+#!/usr/bin/env bash
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Override this section from the script to include the com.sun.management.jmxremote.rmi.port property.
+if [ -z "${KAFKA_JMX_OPTS-}" ]; then
+    export KAFKA_JMX_OPTS="-Dcom.sun.management.jmxremote=true \
+    -Dcom.sun.management.jmxremote.authenticate=false \
+    -Dcom.sun.management.jmxremote.ssl=false "
+fi
+
+# The JMX client needs to be able to connect to java.rmi.server.hostname.
+# The default for bridged n/w is the bridged IP so you will only be able to connect from another docker container.
+# For host n/w, this is the IP that the hostname on the host resolves to.
+
+# If you have more than one n/w configured, hostname -i gives you all the IPs,
+# the default is to pick the first IP (or network).
+export KAFKA_JMX_HOSTNAME=${KAFKA_JMX_HOSTNAME:-$(hostname -i | cut -d" " -f1)}
+
+if [ "${KAFKA_JMX_PORT-}" ]; then
+  # This ensures that the "if" section for JMX_PORT in kafka launch script does not trigger.
+    export JMX_PORT=$KAFKA_JMX_PORT
+    export KAFKA_JMX_OPTS="${KAFKA_JMX_OPTS-} -Djava.rmi.server.hostname=$KAFKA_JMX_HOSTNAME \
+    -Dcom.sun.management.jmxremote.local.only=false \
+    -Dcom.sun.management.jmxremote.rmi.port=$JMX_PORT \
+    -Dcom.sun.management.jmxremote.port=$JMX_PORT"
+fi
+
+# Make a temp env variable to store user provided performance otps
+if [ -z "${KAFKA_JVM_PERFORMANCE_OPTS-}" ]; then
+    export TEMP_KAFKA_JVM_PERFORMANCE_OPTS=""
+else
+    export TEMP_KAFKA_JVM_PERFORMANCE_OPTS="$KAFKA_JVM_PERFORMANCE_OPTS"
+fi
+
+# We will first use CDS for storage to format storage
+export KAFKA_JVM_PERFORMANCE_OPTS="${KAFKA_JVM_PERFORMANCE_OPTS-} -XX:SharedArchiveFile=/opt/kafka/storage.jsa"
+
+echo "===> Using provided cluster id $CLUSTER_ID ..."
+
+# Invoke the docker wrapper to setup property files and format storage
+result=$(/opt/kafka/bin/kafka-run-class.sh kafka.docker.KafkaDockerWrapper setup \
+      --default-configs-dir /etc/kafka/docker \
+      --mounted-configs-dir /mnt/shared/config \
+      --final-configs-dir /opt/kafka/config 2>&1) || \
+      echo $result | grep -i "already formatted" || \
+      { echo $result && (exit 1) }
+
+# Using temp env variable to get rid of storage CDS command
+export KAFKA_JVM_PERFORMANCE_OPTS="$TEMP_KAFKA_JVM_PERFORMANCE_OPTS"
+
+# Now we will use CDS for kafka to start kafka server
+export KAFKA_JVM_PERFORMANCE_OPTS="$KAFKA_JVM_PERFORMANCE_OPTS -XX:SharedArchiveFile=/opt/kafka/kafka.jsa"
+
+# Start kafka broker
+exec /opt/kafka/bin/kafka-server-start.sh /opt/kafka/config/server.properties
diff --git a/docker/docker_official_images/3.7.0/jvm/resources/common-scripts/bash-config b/docker/docker_official_images/3.7.0/jvm/resources/common-scripts/bash-config
new file mode 100755
index 0000000000000..b6971610ef695
--- /dev/null
+++ b/docker/docker_official_images/3.7.0/jvm/resources/common-scripts/bash-config
@@ -0,0 +1,23 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -o nounset \
+    -o errexit
+
+# Trace may expose passwords/credentials by printing them to stdout, so turn on with care.
+if [ "${TRACE:-}" == "true" ]; then
+  set -o verbose \
+      -o xtrace
+fi
diff --git a/docker/docker_official_images/3.7.0/jvm/resources/common-scripts/configure b/docker/docker_official_images/3.7.0/jvm/resources/common-scripts/configure
new file mode 100755
index 0000000000000..deb82aedfc5b3
--- /dev/null
+++ b/docker/docker_official_images/3.7.0/jvm/resources/common-scripts/configure
@@ -0,0 +1,121 @@
+#!/usr/bin/env bash
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+ensure() {
+  if [[ -z "${!1}" ]]; then
+    echo "$1 environment variable not set"
+    exit 1
+  fi
+}
+
+path() {
+  if [[ $2 == "writable" ]]; then
+    if [[ ! -w "$1" ]]; then
+      echo "$1 file not writable"
+      exit 1
+    fi
+  elif [[ $2 == "existence" ]]; then
+    if [[ ! -e "$1" ]]; then
+      echo "$1 file does not exist"
+      exit 1
+    fi
+  fi
+}
+
+# unset KAFKA_ADVERTISED_LISTENERS from ENV in KRaft mode when running as controller only
+if [[ -n "${KAFKA_PROCESS_ROLES-}" ]]
+then
+  echo "Running in KRaft mode..."
+  ensure CLUSTER_ID
+  if [[ $KAFKA_PROCESS_ROLES == "controller" ]]
+  then
+    if [[ -n "${KAFKA_ADVERTISED_LISTENERS-}" ]]
+    then
+      echo "KAFKA_ADVERTISED_LISTENERS is not supported on a KRaft controller."
+      exit 1
+    else
+      # Unset in case env variable is set with empty value
+      unset KAFKA_ADVERTISED_LISTENERS
+    fi
+  fi 
+fi
+
+# By default, LISTENERS is derived from ADVERTISED_LISTENERS by replacing
+# hosts with 0.0.0.0. This is good default as it ensures that the broker
+# process listens on all ports.
+if [[ -z "${KAFKA_LISTENERS-}" ]] && ( [[ -z "${KAFKA_PROCESS_ROLES-}" ]] || [[ $KAFKA_PROCESS_ROLES != "controller" ]] ) && [[ -n "${KAFKA_ADVERTISED_LISTENERS-}" ]]
+then
+  export KAFKA_LISTENERS
+  KAFKA_LISTENERS=$(echo "$KAFKA_ADVERTISED_LISTENERS" | sed -e 's|://[^:]*:|://0.0.0.0:|g')
+fi
+
+path /opt/kafka/config/ writable
+
+# Set if ADVERTISED_LISTENERS has SSL:// or SASL_SSL:// endpoints.
+if [[ -n "${KAFKA_ADVERTISED_LISTENERS-}" ]] && [[ $KAFKA_ADVERTISED_LISTENERS == *"SSL://"* ]]
+then
+  echo "SSL is enabled."
+
+  ensure KAFKA_SSL_KEYSTORE_FILENAME
+  export KAFKA_SSL_KEYSTORE_LOCATION="/etc/kafka/secrets/$KAFKA_SSL_KEYSTORE_FILENAME"
+  path "$KAFKA_SSL_KEYSTORE_LOCATION" existence
+
+  ensure KAFKA_SSL_KEY_CREDENTIALS
+  KAFKA_SSL_KEY_CREDENTIALS_LOCATION="/etc/kafka/secrets/$KAFKA_SSL_KEY_CREDENTIALS"
+  path "$KAFKA_SSL_KEY_CREDENTIALS_LOCATION" existence
+  export KAFKA_SSL_KEY_PASSWORD
+  KAFKA_SSL_KEY_PASSWORD=$(cat "$KAFKA_SSL_KEY_CREDENTIALS_LOCATION")
+
+  ensure KAFKA_SSL_KEYSTORE_CREDENTIALS
+  KAFKA_SSL_KEYSTORE_CREDENTIALS_LOCATION="/etc/kafka/secrets/$KAFKA_SSL_KEYSTORE_CREDENTIALS"
+  path "$KAFKA_SSL_KEYSTORE_CREDENTIALS_LOCATION" existence
+  export KAFKA_SSL_KEYSTORE_PASSWORD
+  KAFKA_SSL_KEYSTORE_PASSWORD=$(cat "$KAFKA_SSL_KEYSTORE_CREDENTIALS_LOCATION")
+
+  if [[ -n "${KAFKA_SSL_CLIENT_AUTH-}" ]] && ( [[ $KAFKA_SSL_CLIENT_AUTH == *"required"* ]] || [[ $KAFKA_SSL_CLIENT_AUTH == *"requested"* ]] )
+  then
+      ensure KAFKA_SSL_TRUSTSTORE_FILENAME
+      export KAFKA_SSL_TRUSTSTORE_LOCATION="/etc/kafka/secrets/$KAFKA_SSL_TRUSTSTORE_FILENAME"
+      path "$KAFKA_SSL_TRUSTSTORE_LOCATION" existence
+
+      ensure KAFKA_SSL_TRUSTSTORE_CREDENTIALS
+      KAFKA_SSL_TRUSTSTORE_CREDENTIALS_LOCATION="/etc/kafka/secrets/$KAFKA_SSL_TRUSTSTORE_CREDENTIALS"
+      path "$KAFKA_SSL_TRUSTSTORE_CREDENTIALS_LOCATION" existence
+      export KAFKA_SSL_TRUSTSTORE_PASSWORD
+      KAFKA_SSL_TRUSTSTORE_PASSWORD=$(cat "$KAFKA_SSL_TRUSTSTORE_CREDENTIALS_LOCATION")
+  fi
+fi
+
+# Set if KAFKA_ADVERTISED_LISTENERS has SASL_PLAINTEXT:// or SASL_SSL:// endpoints.
+if [[ -n "${KAFKA_ADVERTISED_LISTENERS-}" ]] && [[ $KAFKA_ADVERTISED_LISTENERS =~ .*SASL_.*://.* ]]
+then
+  echo "SASL" is enabled.
+
+  ensure KAFKA_OPTS
+
+  if [[ ! $KAFKA_OPTS == *"java.security.auth.login.config"*  ]]
+  then
+    echo "KAFKA_OPTS should contain 'java.security.auth.login.config' property."
+  fi
+fi
+
+if [[ -n "${KAFKA_JMX_OPTS-}" ]]
+then
+  if [[ ! $KAFKA_JMX_OPTS == *"com.sun.management.jmxremote.rmi.port"*  ]]
+  then
+    echo "KAFKA_OPTS should contain 'com.sun.management.jmxremote.rmi.port' property. It is required for accessing the JMX metrics externally."
+  fi
+fi
diff --git a/docker/docker_official_images/3.7.0/jvm/resources/common-scripts/configureDefaults b/docker/docker_official_images/3.7.0/jvm/resources/common-scripts/configureDefaults
new file mode 100755
index 0000000000000..14d28548a83eb
--- /dev/null
+++ b/docker/docker_official_images/3.7.0/jvm/resources/common-scripts/configureDefaults
@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+declare -A env_defaults
+env_defaults=(
+# Replace CLUSTER_ID with a unique base64 UUID using "bin/kafka-storage.sh random-uuid"
+  ["CLUSTER_ID"]="5L6g3nShT-eMCtK--X86sw"
+)
+
+for key in "${!env_defaults[@]}"; do
+  if [[ -z "${!key:-}" ]]; then
+    echo ${key} not set. Setting it to default value: \"${env_defaults[$key]}\"
+    export "$key"="${env_defaults[$key]}"
+  fi
+done
diff --git a/docker/docker_official_images/3.7.0/jvm/resources/common-scripts/run b/docker/docker_official_images/3.7.0/jvm/resources/common-scripts/run
new file mode 100755
index 0000000000000..678aeb63a00df
--- /dev/null
+++ b/docker/docker_official_images/3.7.0/jvm/resources/common-scripts/run
@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+. /etc/kafka/docker/bash-config
+
+# Set environment values if they exist as arguments
+if [ $# -ne 0 ]; then
+  echo "===> Overriding env params with args ..."
+  for var in "$@"
+  do
+    export "$var"
+  done
+fi
+
+echo "===> User"
+id
+
+echo "===> Setting default values of environment variables if not already set."
+. /etc/kafka/docker/configureDefaults
+
+echo "===> Configuring ..."
+. /etc/kafka/docker/configure
+
+echo "===> Launching ... "
+. /etc/kafka/docker/launch