What is Docker?
Docker is an open-source software that allows you to create containers for your applications. Containers are isolated from the host operating system and can be created with a single command.
It automates the deployment applications, executed inside a container. Containers in Docker contains, an application code stored in a file system, provides tools and dependent libraries to execute a code. It always runs the same code irrespective of multiple environments. Docker is a containerization platform that allows developers to package an application with all of its dependencies into a standardized unit for software development.
Docker is a software that allows developers to package their applications into containers. It used to deploy applications in any environment It also also provides a way to package and run, ship applications in containers, that allows it easier for developers to collaborate and work on projects.
Docker containers are lightweight and can be started in a few seconds. This speed makes it possible for developers to quickly test and iterate on their code, which in turn leads to higher quality software.
The other advantage of Docker is that it is an open platform and can run on any infrastructure. This means that developers don’t need to worry about what the underlying system is, they just need to know how Docker works
Docker does not provide any security features and can be difficult to use for beginners Tools:
There are many tools that can be used with Docker, such as Docker Compose, Docker Swarm, and Docker Machine.
- Docker Compose
- Docker Hub:
- Docker Swarm:
These tools allow users to manage their containers more easily and make them more secure by adding additional layers of protection.
Following are some concepts Docker Image:
Image is a template for container. It contains reusable commands or directives that executes in Docker platform. It is readonly instructions how your container is run.
Real world images are packaged pieces of software or applications, published to hub for used by other docker users.
It is an runtime of a Docker image.