Use OpenJDK and Alpine. Make http context easily configurable.

Dockerfile

@@ -1,41 +1,34 @@
-FROM centos:7
+FROM openjdk:8-jdk-alpine
 
 MAINTAINER Clement Laforet <[email protected]>
+# with help from David Smiley
 
-RUN yum update -y && \
-    yum install -y git wget unzip which && \
-    yum clean all
+ENV ZK_HOSTS=localhost:2181 \
+    KM_VERSION=1.3.1.8 \
+    KM_CONFIGFILE="conf/application.conf"
 
-ENV JAVA_MAJOR=8 \
-    JAVA_UPDATE=101 \
-    JAVA_BUILD=13
+RUN apk update && \
+    apk add bash ca-certificates wget && \
+    update-ca-certificates && \
+    mkdir -p /tmp && \
+    cd /tmp && \
+    wget https://github.com/yahoo/kafka-manager/archive/${KM_VERSION}.tar.gz && \
+    tar -xf ${KM_VERSION}.tar.gz && \
+    cd /tmp/kafka-manager-${KM_VERSION} && \
+    ./sbt dist && \
+    mkdir -p /opt && \
+    unzip -d /opt/ ./target/universal/kafka-manager-${KM_VERSION}.zip && \
+    mv /opt/kafka-manager-${KM_VERSION} /opt/kafka-manager && \
+    rm -fr /tmp/* /root/.sbt /root/.ivy2
 
-RUN wget -nv --no-cookies --no-check-certificate \
-    --header "Cookie: oraclelicense=accept-securebackup-cookie" \
-    "http://download.oracle.com/otn-pub/java/jdk/${JAVA_MAJOR}u${JAVA_UPDATE}-b${JAVA_BUILD}/jdk-${JAVA_MAJOR}u${JAVA_UPDATE}-linux-x64.rpm" -O /tmp/jdk-${JAVA_MAJOR}u${JAVA_UPDATE}-linux-x64.rpm && \
-     yum localinstall -y /tmp/jdk-${JAVA_MAJOR}u${JAVA_UPDATE}-linux-x64.rpm && \
-     rm -f /tmp/jdk-${JAVA_MAJOR}u${JAVA_UPDATE}-linux-x64.rpm
+COPY docker-kafka-manager.sh /opt/kafka-manager/bin/docker-kafka-manager.sh
 
-ENV JAVA_HOME=/usr/java/jdk1.8.0_${JAVA_UPDATE} \
-    ZK_HOSTS=localhost:2181 \
-    KM_VERSION=1.3.1.6 \
-    KM_REVISION=6cf43e383377a6b37df4faa04d9aff515a265b30 \
-    KM_CONFIGFILE="conf/application.conf"
+#VOLUME ["/opt/kafka-manager/conf"]
 
-ADD start-kafka-manager.sh /kafka-manager-${KM_VERSION}/start-kafka-manager.sh
+ENV PATH /opt/kafka-manager/bin:$PATH
 
-RUN mkdir -p /tmp && \
-    cd /tmp && \
-    git clone https://github.com/yahoo/kafka-manager && \
-    cd /tmp/kafka-manager && \
-    git checkout ${KM_REVISION} && \
-    echo 'scalacOptions ++= Seq("-Xmax-classfile-name", "200")' >> build.sbt && \
-    ./sbt clean dist && \
-    unzip  -d / ./target/universal/kafka-manager-${KM_VERSION}.zip && \
-    rm -fr /tmp/* /root/.sbt /root/.ivy2 && \
-    chmod +x /kafka-manager-${KM_VERSION}/start-kafka-manager.sh
+EXPOSE 9000
 
-WORKDIR /kafka-manager-${KM_VERSION}
+WORKDIR /opt/kafka-manager
 
-EXPOSE 9000
-ENTRYPOINT ["./start-kafka-manager.sh"]
+ENTRYPOINT ["./bin/docker-kafka-manager.sh"]

docker-kafka-manager.sh

@@ -0,0 +1,17 @@
+#!/bin/sh
+
+cp "$KM_CONFIGFILE" conf/application.modified.conf
+# local var; doesn't change global env
+KM_CONFIGFILE=conf/application.modified.conf
+
+if [[ "$KM_USERNAME" != "" && "$KM_PASSWORD" != "" ]]; then
+    sed -i.bak '/^basicAuthentication/d' "$KM_CONFIGFILE"
+    echo 'basicAuthentication.enabled=true' >> "$KM_CONFIGFILE"
+    echo "basicAuthentication.username=${KM_USERNAME}" >> "$KM_CONFIGFILE"
+    echo "basicAuthentication.password=${KM_PASSWORD}" >> "$KM_CONFIGFILE"
+    echo 'basicAuthentication.realm="Kafka-Manager"' >> "$KM_CONFIGFILE"
+fi
+# this will allow you to customize
+echo 'play.http.context = ${?KM_HTTP_CONTEXT}' >> "$KM_CONFIGFILE"
+
+exec ./bin/kafka-manager "-Dconfig.file=${KM_CONFIGFILE}" "${KM_ARGS}" "${@}"