In the last few years Docker has emerged as a de facto standard for packaging apps for deployment. Today, Heroku Container Registry and Runtime is generally available, allowing you to deploy your Docker images directly to Heroku.
With Container Registry, you get all of the benefits of Docker -- a great local development experience and flexibility to create your own stack -- with the benefits of running on Heroku: maintained infrastructure, container orchestration, routing, the leading add-ons ecosystem, and a world-class security & operations team.
To deploy your Docker image to Heroku, simply run one command in the directory of your Dockerfile:
$ heroku container:push web ===...