Auto-trigger docker build for flake8 when new release is announced

Multi-arch supported (linux/arm/v7,linux/arm64/v8,linux/arm/v6,linux/amd64,linux/ppc64le,linux/s390x)

https://github.com/alpine-docker/multi-arch-docker-images/blob/master/flake8/Dockerfile

Docker images are built together:

https://app.circleci.com/pipelines/github/alpine-docker/multi-arch-docker-images

Image list:

https://github.com/alpine-docker/multi-arch-docker-images/tree/master#image-details

https://hub.docker.com/r/alpine/flake8/tags/

# must mount the local folder to /apps in container.
docker run -ti --rm -v $(pwd):/apps alpine/flake8:3.5.0 local_file.py

# run flake8 container as command
alias flake="docker run -ti --rm -v $(pwd):/apps alpine/flake8:3.5.0"
flake --help
flake local_file.py

• Enable CI cronjob on this repo to run build regularly on master branch (Weekly)
• Build and push the images with latest version
• Run the latest image locally and get the application version
• Tag the image with the version, from previous step
• push the image with version via tool called crane