🐋Docker

Docker Basics

Docker is a platform that allows developers to easily create, deploy, and run applications in containers. Containers are lightweight, standalone, executable packages of software that include everything needed to run an application, including code, runtime, libraries, and system tools.

How Docker Works

Docker uses a client-server architecture. The Docker client communicates with the Docker daemon, which does the heavy lifting of building, running, and distributing your Docker containers.

Here are some basic Docker commands:

• docker build: Builds an image from a Dockerfile

• docker run: Runs a container from an image

• docker ps: Lists running containers

• docker stop: Stops a running container

Docker Examples

Here are some examples of how Docker can be used:

Web Applications

Docker can be used to run web applications. For example, let's say you have a Node.js application. You can create a Dockerfile that specifies the Node.js runtime and any dependencies. You can then build an image from the Dockerfile and run a container from the image. This container will have everything needed to run the Node.js application.

Database Servers

Docker can also be used to run database servers. For example, let's say you need to run an instance of MySQL. You can create a Dockerfile that specifies MySQL and any necessary configurations. You can then build an image from the Dockerfile and run a container from the image. This container will have everything needed to run MySQL.

Development Environments

Docker can be used to create development environments. For example, let's say you need to work on a project that requires a specific version of a programming language or tool. You can create a Dockerfile that specifies the programming language or tool and any necessary dependencies. You can then build an image from the Dockerfile and run a container from the image. This container will have everything needed to work on the project.