It is basically the containerization platform packaging together all the applications along with its peripherals in a docker container. This ensures applications work in any given environment with seamless ease. In simple words, a standardized unit created on the fly to deploy an application or environment. It can be any type of container- Ubuntu container, CentOS container and so on.

Though Virtual Machines can also perform the same tasks but docker containers are suited better. Dockers are more efficient than Virtual Machines in terms of memory consumed, booting time, and integration with other tools.
We at Apps4Rent helps you deploy Docker (Community Edition) with Ubuntu platform on Azure. Tested by the Apps4rent engineers, Docker CE works perfectly fine on Azure cloud platform.

Key Features Available in Docker Community Edition on Azure:

Powered by containerd
Easy integration with other tools
Integrated software lifecycle
Operations management workflow
Saves memory by consuming less space
Quick rebooting
7 months of software maintenance
Hotfixes & patches for recent release
Community-driven roadmap

Disclaimer: Apps4Rent does not offer commercial licenses of any of the products mentioned above. The products come with open source licenses.
Default ports: TCP/UDP 22 for SSH

Learn more:
Docker on Azure
Managed Azure services
Solutions on Microsoft Azure