python-dev-docker-project 0.4.0.dev0

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Patterns for Continuous Integration with Docker using Travis CI 2 - Dev. Repo

The “Docker repo” pattern: create two separate Git repositories: one for Docker release and another for software development. This keeps the Docker-specific code isolated from the actual software. Developers can continue working on the source software as usual, while the production Docker image is developed separately

This repository is an example of the Git repository for software development.

Specifically, we assume that the team uses some different branches and a certain point a pull-request for merge the master branch is necessary. After committing the master branch:

• before the commit, it is necessary to modify the version number in setup.py so that a new release will be created on the package repository (PyPI in our case)
• on Travis CI a new job is created and py.test tests are performed measuring code coverage of Python code.
• if tests are successful
  • code coverage stats are published on coveralls.io through coveralls
  • a new release will be created on the package repository (PyPI in our case)
  • two new docker development images will be released, e.g. e59cbe8-develop (image for last commit on master branch) and develop (the official develop image of the project), on the Docker Registry, i.e. Docker Hub in our case

Dockerfile

FROM python:3.6

COPY . /myproject
WORKDIR /myproject
RUN pip install -e .

CMD ["myproject", "run"]

.travis.yml

sudo: required 
services:
- docker
env:
  global:
    - IMAGE_NAME=gtesei/hello_docker_2
    - REGISTRY_USER=gtesei
    - secure: H8o2BrmikY0e9Gzj1t/Ca1H+hblEv9GC6Qd9MQoN/zxXx0MtiZw3eyCuBO4rpYvX80oeS/e9QM1b4v8OUCsRqGd1nwz4QhRQIRyzh03+n+Sp84qnTqAZvDNbPl0WYDSJyRYFij7SpVP37encJX8ioPaE+YarNn1AGUAVthFOvWhEEeuDGV0lDOXw0j+LsXr1hf821dqvlFLBXPE0dVB6LZD2QEde4BaCQaM+FgBRrcz/bkLMBByviUxdCevJsHSOnhc4rZCbBZ5k5oByJsXVMX/S+SFwP5N4ljkF9rjtIA8fMOlGjk8Z8kXSk3BeLctXGSrZBZBsXG2e89AfBeXFrK91tYdLJROXWdd6MN+U9r+FSIblHqB51zE2zFUpXK9pijUeJLNC2eacdNMRTvxA+tudEIuGkIKkgA4aGw8knoroWXI8ByLtVJA2mXQvlMqiN+pVQt36rwx1Tz0mlw2QOsI713f/JhSoJQNX7flRJrcs2FroCCmDrnpXiE+FN+svjLKz7b07lzw8H78PGfj11YPV8LGDHMRqf0/fu55157QaDgoDKekBLuwXYGT+q5pOu91r+9ywIUo5V8WXel7VM1iUqu3Kjq8DLpwiTErENwEEoq8x5uATXAHsnoXEpBFSj6RsU1BdambMkoz7bbOgviVwTDTGB4jgX7iYdlEYdzA=
language: python
python:
    - "3.6"
cache: pip
before_install:
    - sudo apt-get update
install: 
    - pip install -r requirements-dev.txt
    - pip install pytest pytest-cov
    - pip install coveralls
script: py.test --doctest-modules --cov 
after_success:
    - coveralls
deploy:
  provider: pypi
  user: gtesei
  distributions: sdist bdist_wheel
  password:
    secure: 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
  on:
    branch: master
after_deploy: 
  - docker pull "${IMAGE_NAME}:develop" || true
  - docker build --pull --cache-from "${IMAGE_NAME}:develop" --tag "$IMAGE_NAME" .
  - docker login -u "$REGISTRY_USER" -p "$REGISTRY_PASS"
  - git_sha="$(git rev-parse --short HEAD)"
  - docker tag "$IMAGE_NAME" "${IMAGE_NAME}:develop"
  - docker tag "$IMAGE_NAME" "${IMAGE_NAME}:${git_sha}-develop"
  - docker push "${IMAGE_NAME}:develop" && docker push "${IMAGE_NAME}:${git_sha}-develop"

Travis CI

Coveralls

Package repository [PyPI]

Docker Registry [Docker Hub]

Useful links

Ruby Installer for Windows

To install Travis

gem install travis

Credits

Coding Tips: Patterns for Continuous Integration with Docker on Travis CI - Part 2 of 3: The “Docker repo” pattern

Defining encrypted variables in .travis.yml

Google Cloud | Continuous Delivery with Travis CI

Continuous Integration. CircleCI vs Travis CI vs Jenkins

Continuous Integration with Jenkins and Docker