title: Why does docker report "no such file or directory": unknown?
body: <p><strong>what is expected</strong> </p>
  
  <p>docker should build the image and run the container out of it </p>
  
  <p><strong>Dockerfile</strong></p>
  
  <pre><code>FROM centos:7
  
  ENV JAVA_VERSION 8u191
  ENV BUILD_VERSION b12
  
  RUN yum -y install wget; wget --no-cookies --no-check-certificate --header "Cookie: oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/$JAVA_VERSION-$BUILD_VERSION/2787e4a523244c269598db4e85c51e0c/jdk-$JAVA_VERSION-linux-x64.rpm" -O /tmp/jdk-8-linux-x64.rpm; yum -y install /tmp/jdk-8-linux-x64.rpm
  
  # JDK stripping
  RUN rm -f /usr/java/jdk1.8.0_77/src.zip /usr/java/jdk1.8.0_77/javafx-src.zip
  RUN rm -rf /usr/java/jdk1.8.0_77/lib/missioncontrol/ /usr/java/jdk1.8.0_77/lib/visualvm/ /usr/java/jdk1.8.0_77/db/
  
  RUN alternatives --install /usr/bin/java java /usr/java/latest/bin/java 1
  RUN alternatives --install /usr/bin/javac javac /usr/java/latest/bin/javac 1
  
  ENV JAVA_HOME /usr/java/latest
  ENV PATH=$PATH:/usr/java/latest/bin/java
  RUN echo "$PATH"
  
  RUN rm -f /tmp/jdk-8-linux-x64.rpm; yum -y remove wget; yum -y clean all
  
  COPY target/gs-handling-form-submission-0.1.0.jar /tmp/gs-handling-form-submission-0.1.0.jar
  
  CMD [ "java -jar /tmp/gs-handling-form-submission-0.1.0.jar" ]
  </code></pre>
  
  <p>build-context is the current directory where Dockerfile resides. following is the directory structure </p>
  
  <pre><code>total 8
  -rw-r--r--. 1 root     root     1079 Oct 29 03:42 Dockerfile
  -rw-rw-r--. 1 ec2-user ec2-user 1917 Oct 27 09:17 pom.xml
  drwxrwxr-x. 4 ec2-user ec2-user   30 Oct 27 10:15 src
  drwxr-xr-x. 9 root     root      261 Oct 27 10:19 target
  </code></pre>
  
  <p>i am executing following command to build the image :</p>
  
  <pre><code>docker build --no-cache -f Dockerfile -t cpa:latest .
  </code></pre>
  
  <p>but when running the container , getting following message </p>
  
  <pre><code>docker run -d -p 8081:8081/tcp cpa   
  b2ba9831f1b74c73669843658727ca0d64fcd9de915739b96e17dcfd6e63c7db
  docker: Error response from daemon: OCI runtime create failed: container_linux.go:348: starting container process caused "exec: \"java -jar /tmp/gs-handling-form-submission-0.1.0.jar\": stat java -jar /tmp/gs-handling-form-submission-0.1.0.jar: no such file or directory": unknown.
  </code></pre>
  
  <p>I am not sure why the built jar is not available in the /tmp dir of the container file system 
  in the docker documentation <code>COPY</code>
  is the right keyword to be used to copy files from host machine to container file system ... 
  but then where is the issue ..?
  please suggest </p>
  
  <p>EDIT 1 : fixed the type mistake from 77 to 191 
  here is the latest Dockerfile....</p>
  
  <pre><code>FROM centos:7
  
  ENV JAVA_VERSION 8u191
  ENV BUILD_VERSION b12
  
  RUN yum -y install wget; wget --no-cookies --no-check-certificate --header "Cookie: oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/$JAVA_VERSION-$BUILD_VERSION/2787e4a523244c269598db4e85c51e0c/jdk-$JAVA_VERSION-linux-x64.rpm" -O /tmp/jdk-8-linux-x64.rpm; yum -y install /tmp/jdk-8-linux-x64.rpm
  
  # JDK stripping
  RUN rm -f /usr/java/jdk1.8.0_191/src.zip /usr/java/jdk1.8.0_191/javafx-src.zip
  RUN rm -rf /usr/java/jdk1.8.0_191/lib/missioncontrol/ /usr/java/jdk1.8.0_191/lib/visualvm/ /usr/java/jdk1.8.0_191/db/
  
  RUN alternatives --install /usr/bin/java java /usr/java/latest/bin/java 1
  RUN alternatives --install /usr/bin/javac javac /usr/java/latest/bin/javac 1
  
  ENV JAVA_HOME /usr/java/latest
  ENV PATH=$PATH:/usr/java/latest/bin/java
  RUN echo "$PATH"
  
  RUN rm -f /tmp/jdk-8-linux-x64.rpm; yum -y remove wget; yum -y clean all
  
  COPY target/gs-handling-form-submission-0.1.0.jar /tmp/gs-handling-form-submission-0.1.0.jar
  
  CMD [ "java -jar /tmp/gs-handling-form-submission-0.1.0.jar" ]
  </code></pre>
  
  <p>further, the <code>target</code> dir is part of the build context 
  please refer below:</p>
  
  <pre><code>[root@ip-172-31-14-242 cpa_final]# pwd
  /tmp/cpa_final
  [root@ip-172-31-14-242 cpa_final]# ll
  total 8
  -rw-r--r--. 1 root     root     1084 Oct 29 05:16 Dockerfile
  -rw-rw-r--. 1 ec2-user ec2-user 1917 Oct 27 09:17 pom.xml
  drwxrwxr-x. 4 ec2-user ec2-user   30 Oct 27 10:15 src
  drwxr-xr-x. 9 root     root      261 Oct 27 10:19 target
  [root@ip-172-31-14-242 cpa_final]# cd target/
  [root@ip-172-31-14-242 target]# ll
  total 17304
  drwxr-xr-x. 4 root root       36 Oct 27 10:18 classes
  drwxr-xr-x. 3 root root       25 Oct 27 10:18 generated-sources
  drwxr-xr-x. 3 root root       30 Oct 27 10:18 generated-test-sources
  -rw-r--r--. 1 root root 17708542 Oct 27 10:19 gs-handling-form-submission-0.1.0.jar
  -rw-r--r--. 1 root root     4858 Oct 27 10:18 gs-handling-form-submission-0.1.0.jar.original
  drwxr-xr-x. 2 root root       28 Oct 27 10:18 maven-archiver
  drwxr-xr-x. 3 root root       35 Oct 27 10:18 maven-status
  drwxr-xr-x. 2 root root      121 Oct 27 10:18 surefire-reports
  drwxr-xr-x. 3 root root       19 Oct 27 10:18 test-classes
  [root@ip-172-31-14-242 target]#
  </code></pre>
  
  <p>EDIT 2:</p>
  
  <p>the mentioned jar file is there in <code>/tmp</code> dir of the container file system. PSB</p>
  
  <pre><code>[root@ip-172-31-14-242 ~]# docker run -it cpa /bin/bash
  [root@4018a6c2df8e /]# cd /tmp
  [root@4018a6c2df8e tmp]# ll
  total 17300
  -rw-r--r--. 1 root root 17708542 Oct 27 10:19 gs-handling-form-submission-0.1.0.jar
  -rwx------. 1 root root      836 Oct  6 19:15 ks-script-7RxiSx
  -rw-------. 1 root root        0 Oct  6 19:14 yum.log
  [root@4018a6c2df8e tmp]#
  </code></pre>