ubuntu/jre:17-22.04_edge crash

[Oleg Brigmann]

sle15:~ # docker run -d --name jre-container -e TZ=UTC ubuntu/jre:17-22.04_edge
65456a4cdaded6ed1d0c443bb6712c396a98487a1bf31596ea593f4f79ee297a
sle15:~ # docker logs jre-container
Usage: java [options] <mainclass> [args...]
           (to execute a class)
   or java [options] -jar <jarfile> [args...]
           (to execute a jar file)
   or java [options] -m <module>[/<mainclass>] [args...]
       java [options] --module <module>[/<mainclass>] [args...]
           (to execute the main class in a module)
   or java [options] <sourcefile> [args]
           (to execute a single source-file program)

 Arguments following the main class, source file, -jar <jarfile>,
 -m or --module <module>/<mainclass> are passed as the arguments to
 main class.

 where options include:

    -cp <class search path of directories and zip/jar files>
    -classpath <class search path of directories and zip/jar files>
    --class-path <class search path of directories and zip/jar files>
                  A : separated list of directories, JAR archives,
                  and ZIP archives to search for class files.......

[Vladimir Petko (vpa1977)]

Hi,

The container entrypoint expects Java arguments (e.g. main class).

When the container is launched without arguments it will just display Java help message and exit[1].

If that is being seen as a non-optimal user experience, we can amend the example with a hello world-style application.

Best Regards,
 Vladimir.

[1] https://hub.docker.com/r/ubuntu/jre