Install buildah and podman first (podman is not strictly necessary, just for testing)
Then build the image with:
sudo make branch_or_ref=master release_tag=master run_tests=1 build_alpine
Then, test via:
sudo podman run -it localhost/curl:master -V
You can get the image id using
buildah images
The image needed is 'localhost/curl'.
To push the image to Dockerhub:
buildah push --creds <docker_username>:<docker_password> <image_id> docker://<username>/curl-0rtt:latest