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What is Docker and use of Docker?
Docker lets you build, test, and deploy applications quickly

Using Docker, you can quickly deploy and scale applications into any environment and know your code will run. Running Docker on AWS provides developers and admins a highly reliable, low-cost way to build, ship, and run distributed applications at any scale.An open-source platform, Docker is used by developers to help them automate the deployment of applications inside containers. A consistent environment is provided by docker so that the software can run across multiple computing environments. It gets easier to efficiently ship, build and run applications due to docker.Docker. While Docker is a container runtime, Kubernetes is a platform for running and managing containers from many container runtimes. Kubernetes supports numerous container runtimes including Docker, containerd, CRI-O, and any implementation of the Kubernetes CRI (Container Runtime Interface).

Is Docker really important : Docker is of great importance today. Along with the added bonus of running multiple apps (containers) concurrently on the same machine, it offers a mechanism for managing dependencies that allow each project or application to be isolated with all of its dependencies in a separate container.

Is Docker a VM

A VM lets you run a virtual machine on any hardware. Docker lets you run an application on any operating system. It uses isolated user-space instances known as containers.

Why Docker is invented : It was first released in 2013 and is developed by Docker, Inc. Docker, Inc. Docker is a tool that is used to automate the deployment of applications in lightweight containers so that applications can work efficiently in different environments in isolation.

Try Docker Compose

  1. Step 1: Set up. Create a directory for the project:
  2. Step 2: Define services in a Compose file.
  3. Step 3: Build and run your app with Compose.
  4. Step 4: Edit the Compose file to use Compose Watch.
  5. Step 5: Re-build and run the app with Compose.
  6. Step 6: Update the application.
  7. Step 7: Split up your services.


Docker allows developers to package an application and its dependencies into a container that can be run on any system that supports Docker. This ensures that the application runs consistently across different environments, eliminating the "It works on my machine" problem.

Can Kubernetes run without Docker

Can Kubernetes Run Without Docker The answer is both yes and no. Kubernetes, in itself, is not a complete solution. It depends on a container runtime to orchestrate; you can't manage containers without having containers in the first place.Docker provides an easy way to build and package containerized applications, while Kubernetes provides a powerful platform for managing and scaling those applications. Together, they can provide a complete solution for managing containerized applications at scale.A VM lets you run a virtual machine on any hardware. Docker lets you run an application on any operating system. It uses isolated user-space instances known as containers.

Docker and Kubernetes are two different technologies with different use cases.

Why we use Docker instead of VM : It's best to use Docker when you're running applications with these requirements: Lightweight resource requirements or a microservice architecture. A distributed physical infrastructure environment, including cloud-based servers. Rapid deployment cycles (as Dockerfiles are easier to manage than VM configurations)

What is unique about Docker : Docker's technology is unique because it focuses on the requirements of developers and systems operators to separate application dependencies from infrastructure. Success in the Linux world drove a partnership with Microsoft that brought Docker containers and its functionality to Windows Server.

Is Docker good for beginners

The Docker community maintains the images on Docker Hub, making it possible to set up complete application environments with a single command. The single-line command for setting up an environment can be scripted or automated like any other command-line tool. Docker for the absolute beginner is easy to catch and learn.

Do Not Use Docker if You Develop a Desktop GUI Application. Docker does not suit applications that require rich UI. Docker is mainly intended for isolated containers with console-based applications. GUI-based applications are not a priority, their support will rely on the specific case and application.When you execute docker run , the container process that runs is isolated in that it has its own file system, its own networking, and its own isolated process tree separate from the host. This page details how to use the docker run command to run containers.

Why do we need Docker and Kubernetes : Developers use Docker to create and manipulate container images. They use Kubernetes to manage multiple microservices at scale. Each microservice is individually made up of multiple containers itself.