Continuous deployment pipeline to Dockerhub / Github Container Registry

[jordanperr]

• Automate build and push docker images to DockerHub.
• Update documentation / Create a new docker-compose for deployments that uses this image.

This will facilitate fast deployments in cloud environments, and streamline the setup process for ENTR developers.

[ejsimley]

• Look into GitHub actions for this task
• Work on a light version of docker image and consider multiple versions

[jordanperr]

We decided to use Github Container Registry instead of Docker Hub, and this has been implemented now in the dev branch.

[ejsimley]

Include method for versioning/tagging and release notes for ENTR repo updates

[jordanperr]

Pipeline set up through Github Actions and GitHub Container Registry. This covers the basics for a development CI pipeline. But may fall short as a deployment pipeline. Some to-dos on this front include:

• Security scanning of Docker container. Issue Production deployment pipeline (e.g., security scanning of Docker image). #43
• System for release notes. Issue Production deployment pipeline (e.g., security scanning of Docker image). #43
• Componentize the runtime to avoid monolith container which may be hard to deploy in corporate environment. Issue Componentize entr_runtime image into multiple images, packages, and volumes. #42