Docker Plugin Development

1. What are Docker plugins?
2. What is the use of Docker Plugin?
3. Can Docker be used for development?
4. What is a volume plugin?
5. What is docker in Jenkins?
6. What is docker run?
7. What is difference between Docker and Jenkins?
8. Why does Jenkins need Docker?
9. How does Jenkins use Docker?
10. Why should developers use Docker?
11. What are Docker commands?
12. Is Docker a VM?

What are Docker plugins?

Docker plugins are out-of-process extensions which add capabilities to the Docker Engine. This document describes the Docker Engine plugin API. To view information on plugins managed by Docker Engine, refer to Docker Engine plugin system. This page is intended for people who want to develop their own Docker plugin.

What is the use of Docker Plugin?

Docker Engine's plugin system allows you to install, start, stop, and remove plugins using Docker Engine. For information about legacy (non-managed) plugins, refer to Understand legacy Docker Engine plugins. Docker Engine managed plugins are currently not supported on Windows daemons.

Can Docker be used for development?

🕶 Docker based local development environment

Docker is a tool designed to make it easier to create, deploy, and run applications by using containers. Containers allow a developer to package up an application with all of the parts it needs, such as libraries and other dependencies, and ship it all out as one package.

What is a volume plugin?

A volume plugin that provides access to an extensible set of container-based persistent storage options. It supports single and multi-host Docker environments with features that include tenant isolation, automated provisioning, encryption, secure deletion, snapshots and QoS.

What is docker in Jenkins?

Docker is a platform for running applications in an isolated environment called a "container" (or Docker container). Applications like Jenkins can be downloaded as read-only "images" (or Docker images), each of which is run in Docker as a container.

What is docker run?

Docker allows you to run a container in interactive mode. This means you can execute commands inside the container while it is still running. By using the container interactively, you can access a command prompt inside the running container.

What is difference between Docker and Jenkins?

Docker is a container engine that can create and manage containers, whereas Jenkins is a CI engine that can run build/test on your app. Docker is used to build and run multiple portable environments of your software stack. Jenkins is an automated software testing tool for your app.

Why does Jenkins need Docker?

Docker official site also provides an explanation. For Jenkins usage, it's faster and easier to deploy/install in the docker way. Maybe you don't need the scale more easily feature right now. And since the docker is quite lightweight, so you can run more workloads.

How does Jenkins use Docker?

Whenever a Jenkins build requires Docker, it will create a “Cloud Agent” via the plugin. The agent will be a Docker Container configured to talk to our Docker Daemon. The Jenkins build job will use this container to execute the build and create the image before being stopped.

Why should developers use Docker?

Docker is super useful for development environment because if it runs on your machine, it runs anywhere. It runs on your friend's machine, on staging and also on production. When a new team member starts, s/he runs 3 commands and the app(s) are running. The new team member can be productive from day 1.

What are Docker commands?

Docker Commands

• docker –version. This command is used to get the currently installed version of docker.
• docker pull. Usage: docker pull <image name> ...
• docker run. Usage: docker run -it -d <image name> ...
• docker ps. This command is used to list the running containers.
• docker ps -a. ...
• docker exec. ...
• docker stop. ...
• docker kill.

Is Docker a VM?

Docker is container based technology and containers are just user space of the operating system. ... In Docker, the containers running share the host OS kernel. A Virtual Machine, on the other hand, is not based on container technology. They are made up of user space plus kernel space of an operating system.