molecule quick start

# Prereqs for running molecule

yum install python2-devel python3-devel  # linux olny
 
virtualenv --no-site-packages venv
source venv/bin/activate
pip install molecule ansible
pip install docker-py

# Initialize a new role

molecule init role -r new-role -d docker

source venv/bin/activate
cd new-role
molecule test

### initializing a role with molucule when selinux is active
The above does not work if selinux is enabled.  There's an interestig discusison of selinux and ansible here, 
  https://dmsimard.com/2016/01/08/selinux-python-virtualenv-chroot-and-ansible-dont-play-nice/
  
The option I used was to enable system-site-packages in the venv and then ignore installed when imporitng packages 
with pip for the venv, as discussed here,
  https://stackoverflow.com/a/19459977/3447107
  
virtualenv --system-site-packages venv
source venv/bin/activate
 
pip install -I molecule ansible docker-py
molecule init role -r new-role -d docker
cd new-role2/
molecule test

 
# Initializing an existing role

cd ansible-role-foo
molecule init scenario -r ansible-role-foo


# Docker in Docker build

# build
 docker run --rm -it -v $(pwd):/tmp/$(basename "${PWD}") -w  /tmp/$(basename "${PWD}") retr0h/molecule:latest molecule init role -r foo -d docker


# run
docker run --rm -it -v $(pwd):/tmp/$(basename "${PWD}") -v /var/run/docker.sock:/var/run/docker.sock -w /tmp/$(basename "${PWD}") retr0h/molecule:latest sudo molecule test