Update Dockerfile

Dockerfile

@@ -1,5 +1,5 @@
 FROM anapsix/alpine-java:8_jdk
-RUN cd /tmp 
+WORKDIR /tmp
 RUN wget http://archive.apache.org/dist/maven/maven-3/3.6.1/binaries/apache-maven-3.6.1-bin.tar.gz
 RUN tar -zxvf apache-maven-3.6.1-bin.tar.gz && rm apache-maven-3.6.1-bin.tar.gz && mv apache-maven-3.6.1 /usr/lib/mvn
 RUN chown -R root:root /usr/lib/mvn
@@ -13,9 +13,9 @@ ADD conf/zoo.cfg /opt/zookeeper/conf/zoo.cfg
 RUN source /etc/profile
 #RUN zkServer.sh start
 RUN apk add --no-cache git npm nginx mariadb mariadb-client mariadb-server-utils pwgen
-RUN cd /opt
+WORKDIR /opt
 RUN git clone https://github.com/analysys/EasyScheduler.git
-#RUN cd /opt/EasyScheduler
-#RUN mvn -U clean package assembly:assembly -Dmaven.test.skip=true
-#RUN mv /opt/EasyScheduler/target/escheduler-1.0.0-SNAPSHOT /opt/easyscheduler
-#RUN rm -rf /var/cache/apk/*
+WORKDIR /opt/EasyScheduler
+RUN mvn -U clean package assembly:assembly -Dmaven.test.skip=true
+RUN mv /opt/EasyScheduler/target/escheduler-1.0.0-SNAPSHOT /opt/easyscheduler
+RUN rm -rf /var/cache/apk/*