Create testing virtual environment with docker using Bionic's image

[sec0uth]

Branch docker-#6

[sec0uth]

Concerns

• test the software in the target operating system with few commands, ideally without any shellscript homemade automation;
• updates in the source code automatically reflects in the testing environment
• flexible dependency tree (like docker, runs almost anywhere)

[sec0uth]

Requirements

• [x] containerization infrastructure using:
  • [x] Dockerfile build the images
  • [x] docker-compose helps building and running the images
  • [x] read-only volumes for sharing the source code with container
• [x] should work with testing branchs of Juniper and Ansible

[sec0uth]

To note:

• main docker entrypoint script handles adding some public key at ~/.ssh/id_rsa to a ssh-agent. You can add required public key using volumes to destination /root/.ssh/id_rsa.