Update Dockerfile

Author: shabbirdwd53

Jenkins-PIpeline-Demo/Dockerfile

@@ -1,9 +1,5 @@
 FROM openjdk:8-jdk-alpine
 EXPOSE 8083
-RUN curl -fsSLO https://get.docker/builds/Linux/x86_64/docker-17.04.0-ce.tgz \
-  && tar xzvf docker-17.04.0-ce.tgz \
-  && mv docker/docker /usr/local/bin \
-  && rm -r docker docker-17.04.0-ce.tgz
 RUN addgroup -S shabbir && adduser -S shabbir -G shabbir
 USER shabbir:shabbir
 ARG JAR_FILE=target/*.jar