Docker is an open-source software platform that aids in the creation, management, running, and distribution of applications. Docker enables one to package his application and all of its dependencies into a container. Containers make it possible to deploy your applications easily and uniformly. Today, we’ll delve deeper into Docker and talk about containers, modules, key terms, and other topics.
We’ll go over:
- What exactly is Docker?
- Kubernetes vs. Docker
- Docker Installation
- What to Study Next
Head over to our page to learn more about Docker and Kubernetes.
What exactly is Docker?
Docker is a free software program created by Docker Inc. It was released to the public on March 13, 2013, and has since become a must-have in the world of IT development.
It enables users to launch and deploy its applications in independent and isolated environments. These environments are then referred to as containers.
The developer will be able to run a container on any machine as a result of this.
As you can see, Docker eliminates dependency and compilation issues. All you have to do is start your container, and your application will start right away.
Docker now has a monopoly on the market. Docker is used by many businesses to simplify the process of building, running, and managing applications. It has altered the way businesses develop applications. Docker virtualizes the operating system of the computer on which it is installed, allowing it to be extremely portable.
Docker is mainly used in:
- IT services
- Staffing and recruiting
Before we go any further, let’s talk about Docker containers.
What exactly are containers?
Container technologies have long been used by businesses to address the shortcomings of virtual machines. Containers can be thought of as lighter-weight versions of virtual machines (VMs). The main distinction between containers and virtual machines is that containers do not require their own operating system. All containers on a host share the operating system of that host, which frees up a lot of system resources.
Linux containers gave birth to what is now known as modern containers (LXC). Many contributors, including Google, have contributed to the inclusion of container-related technologies in the Linux kernel. We wouldn’t have the rich container ecosystem we have today if it weren’t for these contributions.
Containerization was not widely available prior to the introduction of Docker. At the application layer, Docker containers create an abstraction. Containers contain everything your application and its container dependencies require to run, including:
- the operating system
- application code
- system tools
- system libraries
Docker provides a plethora of modules and plugins. Let’s have a look at the most well-known.
Docker-compose facilitates the creation and execution of multi-container applications. Compose allows you to configure your app’s services and orchestrate containers on a Docker daemon or Docker Swarm using a YAML file. Consider it a multi-container automated workflow. Docker Compose is ideal for development, testing, continuous integration workflows, and staging environments.
Docker-machine allows you to deploy containerized applications to the cloud. Docker Machine allows you to create a remote virtual machine and manage your containers. It’s an excellent tool for creating deployment environments and managing micro-services that run on your application. It is compatible with popular cloud services such as AWS and Microsoft Azure.
With Docker Swarm, you can manage a cluster of Docker containers using the Docker stack. The Docker stack is built into the Docker command-line interface (CLI). Stack allows you to describe multiple services in a single file. It eliminates the need to keep bash scripts up to date in order to define services.
Docker Swarm enables the management of multiple containers across multiple host machines. It is, in other words, a container orchestration tool. Swarm allows you to combine multiple Docker hosts into a single host.
Kubernetes vs. Docker
It’s very common to mix up Docker and Kubernetes, so let’s take a look at the differences between the two. These technologies complement one another extremely well and are frequently used in tandem. We’ve already covered Docker in this article, but let’s go over some key points again.
Docker is a platform for containerization. Docker is used to create and run containers. Docker Engine is a runtime environment that enables the creation and execution of containers on a development machine. Operating applications can be difficult, especially if you have a large number of containers spread across multiple servers. It can be difficult to figure out how to coordinate and schedule multiple containers, how they communicate with one another, and how to scale your containers. This is where Kubernetes enters the picture!
Kubernetes is an open-source container orchestration software for containerization platforms such as Docker. It has an API for managing container operations. Kubernetes enables you to organize a cluster of virtual machines (VMs) and schedule containers to run on those VMs. You can use Kubernetes to run Docker containers and manage containerized applications. Your containers are organized into pods, which you can scale and manage however you see fit.
There are numerous methods and locations for installing Docker. We’ll go over how to install Docker Desktop for Windows 10.
Docker Desktop is a program that allows you to create and distribute containerized applications and microservices. It includes, according to the Docker documentation:
- Docker Engine
- Docker CLI client
- Docker Compose
- Docker Content Trust
- Credential Helper
Windows 10 installation
Before you can install Docker Desktop on Windows 10, you must have the following prerequisites:
Hardware virtualization support must be enabled in your system’s BIOS if you are running a 64-bit version of Windows 10 Pro, Enterprise, or Education.
Windows must have the Hyper-V and Containers features enabled.
Begin by searching for “install Docker Desktop” on Google. This search will direct you to the download page, where you can download the installer and follow the on-screen instructions.
After installing it, you may need to manually launch the Desktop from the Windows Start menu.
What to Study Next
Congratulations on your first steps with Docker! Docker is a well-known open-source containerization platform that is used in a variety of industries to simplify the process of developing, securing, and managing applications. Docker is a great tool to add to your toolbox because it is in such high demand.
Building a project to add to your professional portfolio is a great way to gain practical experience with Docker. Before you get started, there are a few more things you should know about Docker, such as:
- Lifecycle of Containers
- Commands for Docker
- Developing a new container
- Running containers
That’s all there is to it! After a lengthy, but enjoyable tutorial, you are now ready to take on the container world! You learned how to install Docker, run your own containers, experiment with static and dynamic websites, and most importantly, you gained hands-on experience deploying your applications to the cloud!