Digital Ocean

Create new droplet CentOS 7.2 x64, min. 1GB RAM

Convert droplet CentOS 7.2 to OracleLinux

curl -O https://linux.oracle.com/switch/centos2ol.sh 
sh centos2ol.sh
yum upgrade

Install database preinstall package:

yum install oracle-rdbms-server-12cR1-preinstall

Download install file from Oracle: Oracle Database 12c Release 1 (12.1.0.2.0) Enterprise Edition

linuxamd64_12c_database_1of2.zip (1,673,544,724 bytes) (cksum - 839029806)
linuxamd64_12c_database_2of2.zip (1,014,530,602 bytes) (cksum - 1187131466)

Copy install files from your machine to the server with SCP:

scp linuxamd64_12c_...