Dockerfile in embulk-executor-remoteserver-0.1.1 vs Dockerfile in embulk-executor-remoteserver-0.2.0

@@ -1,14 +1,14 @@
-FROM openjdk:8
+FROM openjdk:8 as builder
 WORKDIR /usr/src/app
 COPY build.gradle settings.gradle gradlew gradle.properties ./
 COPY ./gradle ./gradle
 COPY ./src ./src
 COPY ./.git ./.git
 RUN ./gradlew --no-daemon executableEmbulkServer
 
 FROM openjdk:8-jre
 WORKDIR /root/
 COPY ./docker .
-COPY --from=0 /usr/src/app/build/libs/embulk-server-*.jar ./embulk-server.jar
-ENTRYPOINT ["/root/run_embulk_server.sh"]
+COPY --from=builder /usr/src/app/build/libs/embulk-server-*.jar ./embulk-server.jar
+CMD ["/root/run_embulk_server.sh"]
 EXPOSE 30001