Docker Tutorials
The main aim of this page is to give a brief overview of Docker. Docker is an incredibly powerful tool for containerizing applications.
What is Docker?
Docker is an open-source platform used for automating the deployment, scaling, and management of applications in lightweight, portable containers.
Docker is a containerization technology that allows you to build, package, deploy, and ship container-based software applications. Containers package an application and its dependencies together, so it can run anywhere — from your laptop to cloud servers — without worrying about differences in environments.
Docker Install on Ubuntu
Install Docker Desktop
Docker Concepts
Understanding the components of Docker will help you use it effectively. Some of the
key components are as follows:
- Images: These are the blueprints for containers, consisting of the application code and its dependencies.
- Containers: A Docker container is a running instance of an image.
- Dockerfile: A script that contains instructions to build a Docker image.
- Docker Hub: A registry where you can find pre-built images and upload your own.
Dockerfile
A Dockerfile is a text file that contains a set of instructions to automatically build a Docker image.
Docker Containers
Containers are lightweight virtual machines with relaxed isolation properties to share the host OS among the applications. Containers have their filesystem, and share resources like computing power, memory, process space, etc. Compared to VMs Containers are portable across OS distributions and cloud computing nodes.
Differences between Containers and VMs:
Advantages of Containers
Containerization technology offers many advantages to IT companies.