Containers in DockerĬontainer in Docker is a stand unit of software that packages the code and all the required dependencies so that the application can run more quickly and reliably from one computing environment to another.Īs the Docker container image is a standalone, lightweight, executable software package, it is easy to install and run the relevant software (and services) using the same. The corresponding image can be deployed to any Docker environment as a Docker Container and can further facilitate running Selenium tests in Docker containers. Docker ImagesĮssentially, the Docker image contains everything that is required for running the application as a container.
Along with the flexibility to run Docker on local machines that run Windows, Mac, or Linux, it can also be run on cloud infrastructure like AWS, Azure, etc. Also, Docker runs as a discrete process on the host machine. All the software parts in Docker are organized in Containers.īy default, Dockers come with the strongest isolation capabilities, and the applications run safely and securely in the relevant containers.
Docker provides virtualization at the Operating System (OS) level. What is Docker ?ĭocker is an open-source containerization platform that makes it easy to create, deploy, and run applications in a secure manner using containers. There are umpteen reasons to use Selenium with Docker for web application testing. Docker provides the flexibility to execute tests in containers or isolate the tests in development and deployment. Running Selenium tests in Docker containers helps in performing code reviews (at a faster pace), thereby realizing better quality code, attaining high test coverage, and developing an awesome-quality product.
Hence, automation tests should be run in isolation, and Docker helps in realizing this ‘essential’ requirement. When it comes to Selenium automation testing, it is important that a test run in one execution environment does not hinder the execution of tests run in another test environment (s).
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