Various Docker resources for using data analytics tools like Spark, etc., in teaching

latest commit 4286a153a9 Nigel Stanger authored on 13 May 2019
	pyspark	Minor tidying	5 years ago
	spark	Removed alpine version number (more generic)	5 years ago
	.gitignore	Ignored .tgz files	5 years ago
	Makefile	Constructed new, more portable spark Dockerfile	5 years ago
	README.md	Initial commit	5 years ago
	docker-compose.yml	Removed redundant spark environment variables	5 years ago