composify

Sanely generate the infrastructure needed for developing a multi-component service in Docker.

Generates the following tree:

<app root>
├── Dockerfile.base
├── Dockerfile.development # You'll install testing libraries and such in here.
├── Makefile
├── Makefile.internal
├── bin
│   ├── entrypoint.erb.sh
│   └── make # In the Dockerfile, symlinked to /usr/local/bin/make
└── docker-compose.yml

Installation

• ruby > 2.1 is required.
• gem install composify

Make Targets

• make - initialize everything, shortcut for
  • pull
  • images
  • start_resources
  • setup
  • build
• make pull - Pull all image dependencies
• make images - Build all images that need building
• make setup - run any setup or seeding that is needed.
• make start - start application containers
• make stop - stop application containers
• make implode - docker-compose down --rmi all --volumes
• make shell - Run a shell container
• make production - Build the non-development image
• make build - An example for how to pass-through to the Makefile.internal (TODO)

And, many more. See the Makefile

Development Workflow

Initial

make && make start

Code Iterations

1. Make your code changes
2. If using a compiled language, make build (or any pass-through target)
3. make run, or make start depending on how you wish to see output.

Production (Non-Development) builds

Building the production image is pretty easy. Although, instead of thinking of it as a 'production' image, think of it instead as a non-development image. Basically, your production image just doesn't have some of the development and testing tools installed. Otherwise, it's the same. You can see this because the Dockerfile chain is Dockerfile.base -> Dockerfile.development. The "production" image just doesn't have the development image as layers on top of the base image.

Notes & Explainations

• The main thing going on here is that your main services in the docker-compose.yml file have a bind-mounted source directory.
• Once you run this project, all the generated files constitue the whole thing.

TODO

1. Still need to work on the templates & generation if working on a compiled project such as go, c, rust, etc.
2. Still need to add templates and such for projects like react that do live recompilation and inotify/fswatch types of things.
3. Make a wizard command composify init instead of forcing all arguments to be present on the cli.