Oracle web site

http://www.oracle.com/technetwork/server-storage/linux/downloads/index.html
Installation on Ubuntu 14.04 ( very complex )
Installation in docker - https://github.com/wscherphof/oracle-12c ( Don't understand instructions )
Installing via github - https://github.com/bofm/docker-oracle12c ( looks promising )
Installing Oracle database in docker - https://fritshoogland.wordpress.com/2015/08/11/installing-the-oracle-database-in-docker/
Installing Oracke 12c on Oracle Linux 7 - https://oracle-base.com/articles/12c/oracle-db-12cr1-installation-on-oracle-linux-7