无法通过Dockerfile安装Maven

Question

我使用Dockerfile在动态Jenkins代理节点上安装maven。我能够成功构建并启动容器，而不会出现任何错误。但是，当我使用“ docker exec -it”登录容器时，我看不到maven。但是我能够在容器内手动关闭专家。由于没有错误，所以无法猜测我在哪里做错了。

尝试将其成功下载为apache * .tar.gz格式。

FROM jenkins/jnlp-slave:alpine as jnlp

FROM node:alpine

ENV JAVA_HOME /usr/lib/jvm/default-jvm
RUN apk add --no-cache openjdk8 && \
    ln -sf "${JAVA_HOME}/bin/"* "/usr/bin/"


COPY --from=jnlp /usr/local/bin/jenkins-slave /usr/local/bin/jenkins-agent
COPY --from=jnlp /usr/share/jenkins/slave.jar /usr/share/jenkins/slave.jar

ARG MAVEN_VERSION=3.6.1
USER root

RUN mkdir -p /home/jenkins \
 && cd /home/jenkins \
 && wget  https://archive.apache.org/dist/maven/maven-3/$MAVEN_VERSION/binaries/apache-maven-$MAVEN_VERSION-bin.tar.gz -O - | tar xzf - -C /home/jenkins \
 && mv /home/jenkins/apache-maven-$MAVEN_VERSION /home/jenkins/maven
RUN ln -s /home/jenkins/maven/bin/mvn /usr/bin/mvn

ENTRYPOINT ["/usr/local/bin/jenkins-agent"]

我应该能够执行mvn -version