bash: javac: command not found

[wangyujingGH]

According the steps to build the java image, then docker run -it [name] javac, "docker: Error response from daemon: Container command 'javac' not found or does not exist..", what's wrong?

[Richard-Mathie]

update-alternatives --set javac $JAVA_HOME/bin/javac

[wangyujingGH]

'update-alternatives --set javac $JAVA_HOME/bin/javac' doesn't work.
According others resource, 'sudo apt-get install openjdk-7-jre' only installs the Java Runtime Environment, which contains the implemetion of 'java' command but not the 'javac'.
So running 'sudo apt-get install openjdk-7-jdk' installs the Java Development Environment.