Importance and Advantages of Docker

Docker

Docker = Managing Container

PHYSCIAL —> VMs –> Container

Docker Images – Do Not contain KERNEL

Docker is a Managing Container.Docker is a type of containerization platform that packages your application and all its dependencies together. This ensures that your application works seamlessly in any environment.

The reason for the success of Docker in the DevOps environment is its ability in containerizing the applications. This reduces the time to develop and release a solution for a software development company.It uses virtualization at the operating system-level and delivers software in packages called containers. Docker make it easier for a developer to create, run, and deploy applications.

Container

FULLY independent APP Run time environment

It is a unit of code that packages up a new code of an application that the developer is writing and all of its dependencies. It makes the application run faster between different computer settings.It has everything you need to run an application on another system.

The components include the code, system tools, runtime environment, system libraries, and settings.A container is a software package that contains everything the software needs to run. This includes the executable program as well as system tools, libraries, and settings.

Advantages of Docker

• Increase in productivity
• Easier maintenance
• Rapid deployment
• Continuous deployment and testing environment
• It uses less memory

Commands used in the Session

-Docker exec -it container bash – to enter into a container

-Docker rm container – removes the container

-Docker pause container – pauses the container that is currently running

-Docker unpause container – unpauses the container to running stage

-Docker info – displays the number of containers and images

-Docker inspect container – detailed information on constructs controlled by docker

-Docker run -it ubuntu – to run ubuntu in docker

Commands Used in the Session