Files in the top-level directory in any check-in

# Prerequisite

## Hardware

- 4 or more core (not threads), VT-x and VT-d supported CPU

- 8 GiB or more available memory


## Software

Download following applications and install them.

- fossil 2.8
https://www.fossil-scm.org/download.html

- packer 1.2.3
https://www.packer.io/downloads.html

- vagrant 2.1.0
https://www.vagrantup.com/downloads.html

- VirtualBox 5.2.10
https://www.virtualbox.org/wiki/Downloads


# Operation

Run following command from up to down:

	packer build --force centos7.json
	vagrant up

After that, you'll get a CentOS7 with GCC 8.2.0 environment.