Docker:- Docker is a containerization platform that allows developers to package and deploy applications in isolated, lightweight environments called containers. Docker containers provide a consistent runtime environment for applications, regardless of the host operating system and dependencies.
Here are some basic concepts and commands in Docker:
Docker image: A Docker image is a lightweight, standalone, and executable package that includes everything needed to run an application, such as the code, runtime, system tools, libraries, and settings.
Docker container: A Docker container is a running instance of a Docker image. It is isolated from the host system and other containers, but shares the same kernel and resources with the host.
Dockerfile: A Dockerfile is a text file that contains instructions to build a Docker image. It specifies the base image, the commands to install and configure the application, and the exposed ports.
Docker Hub: Docker Hub is a central repository for Docker images. It provides a public and private registry for users to share and store Docker images.
Docker commands:
docker run: Run a Docker image and create a container. docker build: Build a Docker image from a Dockerfile. docker push: Push a Docker image to a Docker registry, such as Docker Hub. docker pull: Pull a Docker image from a Docker registry. docker ps: List running containers. docker stop: Stop a running container. docker rm: Remove a stopped container. docker images: List Docker images. These are just some of the basics of Docker, and there are many more commands and concepts to explore. Docker is a powerful tool for building, testing, and deploying applications in a portable and scalable way.