chore: use compiled cmak for docker build

* consider renamed github repository
* use compiled version
* use slim base image
* single place for keeping CMAK version

Resolves #27
Resolves #24
Resolves #22
Resolves #11

Dockerfile

@@ -1,31 +1,22 @@
+FROM openjdk:11-jre as build
 
-### STAGE 1: Build ###
-FROM openjdk:11-jdk AS build
+ARG CMAK_VERSION="3.0.0.5"
 
-ENV KAFKA_MANAGER_SOURCE=3.0.0.5
-ENV KAFKA_MANAGER_VERSION=3.0.0.5
-ENV KAFKA_MANAGER_SRC_DIR=/kafka-manager-source
-ENV KAFKA_MANAGER_DIST_FILE=$KAFKA_MANAGER_SRC_DIR/target/universal/cmak-$KAFKA_MANAGER_VERSION.zip
+RUN curl -L https://github.com/yahoo/CMAK/releases/download/${CMAK_VERSION}/cmak-${CMAK_VERSION}.zip -o /tmp/cmak.zip \
+    && unzip /tmp/cmak.zip -d / \
+    && ln -s /cmak-$CMAK_VERSION /cmak \
+    && rm -rf /tmp/cmak.zip
 
-RUN echo "Building Kafka Manager" \
-    && wget "https://github.com/yahoo/CMAK/archive/${KAFKA_MANAGER_SOURCE}.tar.gz" -O CMAK-sources.tar.gz \
-    && mkdir $KAFKA_MANAGER_SRC_DIR \
-    && tar -xzf CMAK-sources.tar.gz -C $KAFKA_MANAGER_SRC_DIR --strip-components=1 \
-    && cd $KAFKA_MANAGER_SRC_DIR \
-    && echo 'scalacOptions ++= Seq("-Xmax-classfile-name", "200")' >> build.sbt
-
-ADD robust_build.sh /
-RUN chmod +x robust_build.sh && /robust_build.sh
-
-### STAGE 2: Package ###
-FROM openjdk:11-jre
+FROM openjdk:11-jre-slim
 MAINTAINER Hleb Albau <[email protected]>
 
-###RUN apk update && apk add bash
-COPY --from=build /kafka-manager-bin /kafka-manager
+COPY --from=build /cmak /cmak
+
+VOLUME /cmak/conf
 
-VOLUME /kafka-manager/conf
 ENV JAVA_OPTS=-XX:MaxRAMPercentage=80
-##CMD ["/kafka-manager/bin/cmak", "-Dpidfile.path=/dev/null", "-Dapplication.home=/kafka-manager"]
-ENTRYPOINT ["/kafka-manager/bin/cmak", "-Dpidfile.path=/dev/null", "-Dapplication.home=/kafka-manager", ""]
+
+WORKDIR /cmak
+
+ENTRYPOINT ["/cmak/bin/cmak", "-Dpidfile.path=/dev/null", "-Dapplication.home=/cmak", ""]
 

README.md

@@ -18,8 +18,7 @@ Kafka Manager images come in two flavors:
 docker run -d \
      -p 9000:9000  \
      -e ZK_HOSTS="localhost:2181" \
-     hlebalbau/kafka-manager:stable \
-     -Dpidfile.path=/dev/null
+     hlebalbau/kafka-manager:stable
 ```     
 
 ### Using docker-compose
@@ -33,7 +32,6 @@ services:
     environment:
       ZK_HOSTS: "zoo:2181"
       APPLICATION_SECRET: "random-secret"
-    command: -Dpidfile.path=/dev/null
 ```
 ### In Kubernetes with Kubernetes operator