The issue of a program failing to execute properly when relocated from one environment to another is as ancient as software development. Differences in configuration, underlying library needs, and other dependencies are the most common causes of such issues.
Containers solve this challenge by offering a lightweight, immutable architecture for packaging and deploying applications. A container image encapsulates an application or service, as well as its dependencies and configuration. The containerized application may be tested as a standalone unit and deployed to the host operating system as a container image instance.
Containers make it possible for developers and IT professionals to deploy programs across environments with few or no changes