[HIVEMALL-84-2] Fix docker

[amaya382]

What changes were proposed in this pull request?

Fix docker (#68 (comment))

What type of PR is it?

Bug Fix

What is the Jira issue?

HIVEMALL-84

How was this patch tested?

manual tests

[coveralls]

Coverage remained the same at 37.962% when pulling ede6c9d on amaya382:fix-docker into bffd2c7 on apache:master.

[myui]

@amaya382 build of hivemall better to be optional in the document. Provide ready-to-use jars in the docker image.

I think Docker file should invoke bin/build.sh to create jars before ln -s.
https://github.com/apache/incubator-hivemall/blob/master/resources/docker/Dockerfile#L45

[amaya382]

@myui I've wanted to write as option explicitly but it makes doc complex. because if use data volume (probably most frequent use case), building becomes a must. so in fact, it's necessary to build.
if distribute via dockerhub, we can divide use prebuild image (for users, don't need to build hivemall) and use from source (for developers, need to build hivemall), and can write easy document.
Wait for dockerhub support or not?

I think Docker file should invoke bin/build.sh to create jars before ln -s

what will change?

[myui]

@amaya382

what will change?

${HIVEMALL_PATH}/target/hivemall-core-${HIVEMALL_VERSION}-with-dependencies.jar is missing before building hivemall.

[amaya382]

Now blocked by HIVEMALL-100

[myui]

@amaya382 Merged with modifications. Thanks!