What is Docker?
Docker is a containerization tool that basically encapsulates the application and its dependencies into compact units called Docker containers. These Docker containers contain the code, runtime, libraries, and other essential tools that is needed to run the application. Here users first write a simple Dockerfile mentioning the base image, work directory, tools to install, and commands to run the Docker container. Then this Dockerfile is built to create a Docker image. These docker images are lightweight and portable. Docker images can be run in any operating system but the only condition is to install docker on that system. This allows the developers to run their applications without facing any issues in any operating system or any specific hardware requirements. Multiple docker containers can be run on a single host machine which results in maximizing resource utilization and reducing infrastructure costs. In summary, we can say Docker has become a very important tool for developers and organizations for software deployment and delivery pipelines.
How To Use SSH Keys Inside Docker Container?
SSH key is a credential used for remote access of servers without using any type of username and password and Docker is a containerization tool used to encapsulate the application with its dependencies into compact units called docker containers. In this guide, I will first discuss what is SSH key and how it works. Then I will discuss docker. After that, I will walk you through the different steps to use SSH keys inside a docker container.