Dockerfile and GitHub Action to Publish vivoweb/vivo-core

Created by: ghost

https://hub.docker.com/repository/docker/vivoweb/vivo-solr

Will require DOCKERHUB_TOKEN and DOCKERHUB_USERNAME secrets before merging.

To test:

docker build -t vivo/solr .
docker run -p 8983:8983 vivo/solr

or

docker run -p 8983:8983 vivoweb/vivo-solr