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Docker Builder

Build script to create images which are based on each other in a certain hierarchy, tag them and push them to a remote repository.

The scenario is a stack of docker images where the 2nd one is made FROM: the 1st, the 3rd one is made FROM: the 2nd, ... and so on.

docker-builder helps to rebuild such a stack from the point where anything might have to changed and therefore a rebuild of an image (and naturally all images on top of that image in such a stack) is required. Let's say there is a stack of 10 images based on each other and i.e. a vulnaribility turns up in the 7th of those 10. The docker-builder helps to automatically rebuild the images 7-10

Test

sudo pip install -r requirements.txt
make test

Install

pip install docker-builder

Usage

docker-builder [-f <builder.yaml>] [--no-push] [--no-cache] [<container>...]

Config file

It expects a config file in yaml format in the current folder named builder.yaml.

Format

registries:
  - registry: https://index.docker.io/v1/
    username: user
    password: pass
    email: email

  - registry: local
    username: 127.0.0.1:5000

containers:
  - container1
  - container2
  - container3

Registries

Each of the containers will be tagged and pushed to each of the registries with the latest tag.

If registry is local, no login will be attempted and the container will be pushed to the local registry as defined in the username. If registry is an http/https based registry, the username, password and email will be used to login.

Containers

The containers attribute defines a list of containers and the order in which they will be built. It effectively defines the dependencies among containers and ensure the "source" ones are built first.

Each of the containers defined in the list must be defined in a matching name folder.

TODO

Lots of things; this first version is very crude and only a wrapper arround the regular docker CLI command.

  • use docker-py (why not...)
  • better management of hierarchy in a project (e.g. specifying a parent container would automatically re-build the childrens)
  • suggestions?