Implements: blueprint rabbit-container-set

This patch provides an initial implementation of docker-compose
(i.e. fig). docker-compose runs in a container. The container is
only instantiated when invoked to manage a container set
(i.e. docker-compose up) and then stopped when the command is
finished executing.

Change-Id: I797f06bed773192129b57aae9824d4f97c70b3ab

docker/docker-compose/README.md

@@ -0,0 +1,107 @@
+Docker Compose (ie Fig)
+=======================
+
+[![wercker status](https://app.wercker.com/status/d5dbac3907301c3d5ce735e2d5e95a5b/s/master "wercker status")](https://app.wercker.com/project/bykey/d5dbac3907301c3d5ce735e2d5e95a5b)
+
+Fast, isolated development environments using Docker.
+
+Define your app's environment with Docker so it can be reproduced anywhere:
+
+    FROM python:2.7
+    ADD . /code
+    WORKDIR /code
+    RUN pip install -r requirements.txt
+    CMD python app.py
+
+Define the services that make up your app so they can be run together in an isolated environment:
+
+```yaml
+web:
+  build: .
+  links:
+   - db
+  ports:
+   - "8000:8000"
+   - "49100:22"
+db:
+  image: postgres
+```
+
+(No more installing Postgres on your laptop!)
+
+Then type `docker-compose up`, and Compose will start and run your entire app.
+
+There are commands to:
+
+ - start, stop and rebuild services
+ - view the status of running services
+ - tail running services' log output
+ - run a one-off command on a service
+
+Installation and documentation
+------------------------------
+
+Full documentation is available on [Fig's website](http://www.fig.sh/).
+
+Use wtih Kolla
+--------------
+
+Fig (ie docker-compose) is being used to compose one or more co-located
+containers know as [container sets][]. Fig is deployed as a container from the
+kollaglue [repository][] to Kolla nodes using the Heat orchestration [template].
+The fig container creates a host mount to communicate with the docker api over
+a unix socket. The docker engine could be configured to expose the API over TCP
+and may be evaluated for future use. An additional host mount to
+/opt/docker-compose for fig to read the .yml file. This allows for seperating
+the fig code from the data/configuration information.
+
+Either create or modify the existing docker-compose.yml file at
+/opt/docker-compose. Here is a simple example of a single container for
+RabbitMQ
+
+```
+rabbitmq:
+  image: kollaglue/fedora-rdo-rabbitmq
+  environment:
+    RABBITMQ_NODENAME: rabbit01
+    RABBITMQ_USER: rabbit
+    RABBITMQ_PASS: password
+  net: "host"
+  ports:
+    - "5672:5672"
+    - "15672:15672"
+    - "4369:4369"
+    - "25672:25672"
+  privileged: true
+```
+
+Then run up to instantiate the container-set:
+```
+$ docker run --privileged -v /opt/docker-compose:/opt/docker-compose -v /var/run/docker.sock:/var/run/docker.sock kollaglue/fedora-rdo-docker-compose up -d
+```
+The -d flag tells fig to run the container set in daemonized mode.
+
+[container sets]: https://github.com/stackforge/kolla/blob/master/specs/containerize-openstack.rst
+[template]: https://github.com/stackforge/kolla/tree/master/devenv
+[repository]: https://registry.hub.docker.com/u/kollaglue/fedora-rdo-docker-compose/
+
+Contribute to Kolla Fig
+-----------------------
+
+Clone the repo:
+```
+git clone https://github.com/docker/fig.git
+```
+Set the following ENVs in the project's Dockerfile:
+```
+ENV COMPOSE_PROJECT_NAME kollaglue-fedora-rdo
+ENV COMPOSE_FILE /opt/docker-compose/docker-compose.yml
+```
+Hack as needed, then build the image:
+```
+$ docker build -t kollaglue/kollaglue-fedora-rdo-docker-compose .
+```
+Push the image to the kollaglue repo
+```
+$ docker push kollaglue/fedora-rdo-docker-compose:latest
+```