Start with travis

Travis

Travis CI is a continuous integration service used to build and test software projects hosted at GitHub.

Simple repo with travis

Create a github repository with a file hello_world.py:

print("Hello World!")

Here we call this repo simple_travis (see https://github.com/sbartek/simple_travis).

In travis CI https://travis-ci.org/getting_started add repo by pressing + (remember about sync accounts).

Next create .travis.yml with

language: python
python:
  - 3.6.8
script: 
  - python hello_world.py

Then, push to master should trigger running the script hello_world.py. You can see it in at the end of travis’ job logs:

$ python hello_world.py
Hello World!!!
The command "python hello_world.py" exited with 0.
Done. Your build exited with 0.

Building a docker container and pushing it to docker hub

Here we connect travis to project flaskhelloworld build in Docker: Hello World.

I assume you have an account on Docker Hub and you have sync it with github. Then you have to add a github repo to travis. The in repo’s setting (More Options -> Settings) in travis you need to add credentials from Docker Hub Account Settings -> Security -> New Access Token

And finally create .travis.yml similar to this one:

language: python
python:
  - 3.6.8
services:
  - docker
before_install:
  - docker build --tag $DOCKER_USERNAME/flaskhelloworld .
  - docker images
  - echo "$DOCKER_PASSWORD" | docker login -u "$DOCKER_USERNAME" --password-stdin
  - docker push $DOCKER_USERNAME/flaskhelloworld
script:
  - python test/test_app.py

And that’s it. See the repo https://github.com/sbartek/sample_flask_app.