Docker

Some people have had success with Docker, although it is not officially supported. You'll need to create three files in your Slate directory:

.dockerignore

.git
source

Dockerfile

FROM ruby:onbuild
MAINTAINER Adrian Perez <adrian@adrianperez.org>
VOLUME /usr/src/app/source
EXPOSE 4567

RUN apt-get update && apt-get install -y nodejs \
&& apt-get clean && rm -rf /var/lib/apt/lists/*

CMD ["bundle", "exec", "middleman", "server", "--force-polling"]

docker-compose.yml

app:
  build: .
  ports:
    - 4567:4567
  volumes:
    - ./source:/usr/src/app/source

After the files have been created, you can run Slate with docker-compose up.