You will need to initialize your phoenix app at the base of ./src/.
Replace the variables APP_NAME in Vagrantfile
and the various variables in application.yml.
Then continue.
You'll need to install VirtualBox, Vagrant, and Ansible first. VirtualBox and Vagrant both have Mac OS X installer packages, and Ansible can be installed either with Homebrew or with pip, the Python package manager.
Once you've got those installed, you can bootstrap the project with:
$ cd vagrant && vagrant up
This will create the box, install the gems, create the database (if it doesn't already exist), and start the app inside the box. To access it, add an entry in your /etc/hosts file like the following (or do the equivalent in dnsmasq.conf):
192.168.100.23 ampifiu.local
You can then visit http://ampifiu.local/.
The app will be started inside a detached screen(1) session
inside the Vagrant box. To access it, run vagrant ssh and answer 'y'
when prompted to resume the screen(1) session. Note, if you get a message that
there is a dead screen session when you ssh in, you'll have to manually run
$ ./phoenix-screen.sh
To re-run the provisioning scripts, which are idempotent, you can simply do:
$ vagrant provision
This should bring the box back into its correct configuration if anything has gotten messed up.