Monday 29 September 2014

Vagrant and Docker Workflow

I've recently been looking into using both Vagrant and Docker to develop my projects.  This is the work flow that I've settled on...

  • I'll use Vagrant to support my development work
  • I'll use Docker as the mechanism for getting my projects hosted
  • Start a project with a Vagrant set up file that will launch a Debian vm and apt-get Docker installed on it
  • The Vagrant VM is used to build the code
  • The result of of the development code is to build a Docker image of the project
  • The Docker image is what is then used to deliver the project's services

As an example I created vagrant-docker-flask on GitHub to show how this works.

  1. Clone the git repo: git clone
  2. In the cloned directory run:  vagrant up
  3. You now have the dev machine image installed that you can connect to using: vagrant ssh
  4. Inside vagrant run: cd /vagrant/flaskserver/
  5. Then build the flask server image with: sudo docker build -t="local:flask" .
  6. Start up a container from the image with:  sudo docker run -d -p 5000:5000 local:flask python
  7. The flask server will run and be accessible from the original host machine at http://localhost:5000/
  8. To work on the code, you can now edit flask/, run the docker build and the docker run command again and see your changes

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