diff --git a/spark/test/Dockerfile b/spark/test/Dockerfile
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+++ b/spark/test/Dockerfile
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+FROM alpine:3.8
+
+MAINTAINER Newnius <newnius.cn@gmail.com>
+
+USER root
+
+# Prerequisites
+RUN apk add --no-cache openssh openssl openjdk8-jre rsync bash procps
+
+ENV JAVA_HOME /usr/lib/jvm/java-1.8-openjdk
+
+ENV PATH $PATH:$JAVA_HOME/bin
+
+ENV SPARK_VER 2.2.1
+
+RUN wget https://archive.apache.org/dist/spark/spark-$SPARK_ENV/spark-$SPARK_ENV-bin-without-hadoop.tgz && \
+	tar -xvf spark-$SPARK_ENV-bin-without-hadoop.tgz -C /usr/local && \
+	rm spark-$SPARK_ENV-bin-without-hadoop.tgz
+
+RUN ln -s /usr/local/spark-$SPARK_ENV-bin-without-hadoop /usr/local/spark
+
+ENV SPARK_HOME /usr/local/spark
+
+ENV PATH $PATH:$SPARK_HOME/bin
+
+ADD bootstrap.sh /etc/bootstrap.sh
+
+WORKDIR /usr/local/spark
+
+ENTRYPOINT ["/etc/bootstrap.sh"]
diff --git a/spark/test/README.md b/spark/test/README.md
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+++ b/spark/test/README.md
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+# Spark on yarn
+
+## Create a spark cluster in swarm mode
+
+`--hostname` needs 1.13 or higher
+
+```bash
+docker service create \
+--name spark-master \
+--hostname spark-master \
+--detach true \
+--network swarm-net \
+--replicas 1 \
+--endpoint-mode dnsrr \
+newnius/spark:2.2.1
+```
+
+```bash
+docker service create \
+--name spark-slave1 \
+--hostname spark-slave1 \
+--detach true \
+--network swarm-net \
+--replicas 1 \
+--endpoint-mode dnsrr \
+newnius/spark:2.2.1
+```
+
+```bash
+docker service create \
+--name spark-slave2 \
+--hostname spark-slave2 \
+--detach true \
+--network swarm-net \
+--replicas 1 \
+--endpoint-mode dnsrr \
+newnius/spark:2.2.1
+```
+
+## Init && Test
+
+In the first deploy, format hdfs
+
+### Stop HDFS (in master)
+```bash
+sbin/stop-dfs.sh
+```
+
+### Format HDFS (in master)
+```
+bin/hadoop namenode -format
+```
+
+### Start HDFS (in master)
+```bash
+sbin/start-dfs.sh
+```
+
+### Run Hello World
+```bash
+spark-submit \
+	--master yarn \
+	--deploy-mode cluster \
+	--class org.apache.spark.examples.JavaSparkPi \
+	./examples/jars/spark-examples_2.11-2.2.1.jar 100
+```
+
+### UI
+
+YARN: spark-master:8088
+
+HDFS: spark-master:50070
+
+_Proxy needed, e.g. [newnius/docker-proxy](https://hub.docker.com/r/newnius/docker-proxy/)_
+
+## customized config
+
+```bash
+docker service create \
+--name spark-master \
+--hostname spark-master \
+--detach=true \
+--network swarm-net \
+--replicas 1 \
+--mount type=bind,source=/mnt/data/spark/hdfs/master,target=/tmp/hadoop-root \
+--mount type=bind,source=/mnt/data/spark/logs/master,target=/usr/local/hadoop/logs \
+--mount type=bind,source=/mnt/data/spark/config/hadoop,target=/mnt/config/hadoop \
+--mount type=bind,source=/mnt/data/spark/config/spark,target=/mnt/config/spark \
+--endpoint-mode dnsrr \
+newnius/spark:2.2.1
+```
+
+You dont't need to put all files in dir, only add files to be replaced.
diff --git a/spark/test/bootstrap.sh b/spark/test/bootstrap.sh
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index 0000000..3bd71eb
--- /dev/null
+++ b/spark/test/bootstrap.sh
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+#! /bin/bash
+
+if [[ $1 == "master" ]]; then
+	./sbin/start_master.sh
+fi
+
+if [[ $1 == "slave" ]]; then
+	./sbin/start_slave.sh spark://$2:7077
+fi
+
+while true; do sleep 1000; done