Add build process for docker images

[zhilingc]

To begin with, we can just push the docker images to a public gcr repository. Later we can see about migrating it to Dockerhub.

Will use google cloud build for this.

[tims]

Sorry, I should have asked this earlier..

Why are we not using the maven docker plugin to build the docker images anymore? If we were using that we could push to gcr directly using mvn deploy.

[zhilingc]

Sorry, I should have asked this earlier..

Why are we not using the maven docker plugin to build the docker images anymore? If we were using that we could push to gcr directly using mvn deploy.

We needed to build ingestion first then bake both ingestion and core jars (which are in separate directories) into the core docker image. There wasn't a way to do it with the maven docker plugin.

[tims]

I'm looking into a way around this.. if we could use the mvn native way, then we can utilize auto tagging of commits and auto incrementing of snapshot and release versions.

[tims]

closing this as it's fine for now.