Change basic image to openjdk:11-slim (#216)

Author: coderzc

README.md

@@ -13,7 +13,7 @@ The hugegraph-computer is a distributed graph processing system for hugegraph. I
 - Based on BSP(Bulk Synchronous Parallel) model, an algorithm performs computing through multiple parallel iterations, every iteration is a superstep.
 - Auto memory management. The framework will never be OOM(Out of Memory) since it will split some data to disk if it doesn't have enough memory to hold all the data.
 - The part of edges or the messages of super node can be in memory, so you will never lose it.
-- You can output the results to HDFS or HugeGraph, or any other system.
+- You can load the data from HDFS or HugeGraph, output the results to HDFS or HugeGraph, or adapt any other systems manually as needed.
 - Easy to develop a new algorithm. You just need to focus on a vertex only processing just like as in a single server, without worrying about message transfer and memory/storage management.
 
 ## Learn More

computer-dist/Dockerfile

@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-FROM openjdk:11-jre
+FROM openjdk:11-slim
 LABEL maintainer="HugeGraph Docker Maintainers <dev@hugegraph.apache.org>"
 # use ParallelGC which is more friendly to olap system
 ENV JAVA_OPTS="-XX:+UnlockExperimentalVMOptions -XX:+UseParallelGC -XX:+UseContainerSupport -XX:MaxRAMPercentage=50 -XshowSettings:vm"

computer-k8s-operator/Dockerfile

@@ -14,8 +14,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-FROM openjdk:11-jre
+FROM openjdk:11-slim
 LABEL maintainer="HugeGraph Docker Maintainers <dev@hugegraph.apache.org>"
-WORKDIR /opt/app
+WORKDIR /hugegraph/operator
 COPY target/hugegraph-computer-operator-*.jar hugegraph-computer-operator.jar
 ENTRYPOINT ["java", "-jar", "hugegraph-computer-operator.jar"]