What is a Dockerfile?
The Dockerfile uses DSL (Domain Specific Language) and contains instructions for generating a Docker image. Dockerfile will define the processes to quickly produce an image. While creating your application, you should create a Dockerfile in order since the Docker daemon runs all of the instructions from top to bottom.
(The Docker daemon, often referred to simply as “Docker,” is a background service that manages Docker containers on a system.)
- It is a text document that contains necessary commands which on execution help assemble a Docker Image.
- Docker image is created using a Dockerfile.
To Know more about the Dockerfile refer to the Docker – Concept of Dockerfile.
What is Docker?
Docker is a set of Platforms as a service (PaaS) products that use Operating system-level virtualization to deliver software in packages called containers. Containers are isolated from one another and bundle their own software, libraries, and configuration files; they can communicate with each other through well-defined channels. All containers are run by a single operating system kernel and therefore use fewer resources than a virtual machine.
Table of Content
- What is Docker?
- Why Docker is popular?
- What is a Dockerfile?
- What is Docker Architecture and How Docker Works?
- What is Docker Image?
- What is Docker Container?
- What is Docker Hub?
- What is Docker Compose?
- How to Download Docker Desktop?
- Docker Commands
- Docker Engine
- Why to use Docker?
- What is Docker For AWS?
- Difference Between Docker Containers and Virtual Machines
- Install Docker On Ubuntu
- Sample Example: Containerizing Application Using Docker
- Sample Example to Push an image to Docker Hub
- Fetch and run the image from Docker Hub
- Benefits of Docker
- Alternatives of Docker
- Docker Security