在Dockerfile中提取gz

我有一个目录结构如下.

- app
  Dockerfile
   - target
     - test_app.tar.gz

tar.gz的提取将具有以下内容,

- lib
- conf
- bin

我想提取并添加lib/*文件夹到docker镜像.

FROM docker.hub.com/alpine/jdk1.8:latest  

RUN mkdir -p /service \
            /service/app_lib \
            /service/lib

COPY target/test_app.tar.gz /service/app_lib/
RUN cd  /service/app_lib/ 
RUN tar -xzf test_app.tar.gz
RUN rm test_app.tar.gz
RUN cd lib
COPY * /service/lib/
RUN rm app_lib

得到以下错误.

Step 5/11 : RUN tar -xzf test_app.tar.gz
 ---> Running in edde27a1cc60
tar (child): test_app.tar.gz: Cannot open: No such file or directory
tar (child): Error is not recoverable: exiting now
tar: Child returned status 2
tar: Error is not recoverable: exiting now

不知道这有什么问题.

该ADD指令将.gz在构建时自动解压缩

ADD target/test_app.tar.gz /service/app_lib
# Clean up
RUN rm -rf /service/app_lib/conf \
           /service/app_lib/bin