The Dockerfile in this repository builds a Docker image that contains octopress as well as additional dependencies I use to build my blog, especially pandoc and xelatex.
All octopress files are located in /octopress. To use this with your own (existing) blog simply
mount your octopress directory in that location:
docker run -ti -v $(pwd):/octopress -p 4000:4000 humburg/octopress bash
Then run the usual rake commands inside the container. If you use any additional gem files with your
blog you'll want to run rake install first. Avoid having to do that repeatedly by commiting the changes
to a new image.