Project 11 - Docker Project for DevOps Engineers

Dockerfile:

A Dockerfile is a script that contains instructions for building a Docker image. It is used to automate the process of creating and configuring a container image. The Dockerfile specifies the base image to use, the commands to run to install dependencies, and any other configuration options.

A Dockerfile is like a set of instructions for making a container. It tells Docker what base image to use, what commands to run, and what files to include. For example, if you were making a container for a website, the Dockerfile might tell Docker to use an official web server image, copy the files for your website into the container, and start the web server when the container starts.

Task:

1. Create a Dockerfile for a simple web application (e.g. a Node.js or Python app)

FROM : Specifies the base image to use as the starting point for the new image.

· RUN : Runs commands in the container, such as installing software or updating system settings.

· COPY : Copies files or directories from the host machine to the container file system.

· CMD : Specifies the command that should be run when the container is started.

1. Build an Image using Dockerfile.

To build an image using a Dockerfile, you can use the “docker build” command.

1. Run the image to create a container.

To run a container from an image, you can use the “docker run” command.

1. Verify that the application is working as expected by accessing it in a web browser.

1. Push the image to a public or private repository (e.g. Docker Hub )

To push an image to a public or private repository, you first need to have an account on the repository platform (e.g. Docker Hub) and be logged in.

Once you are logged in, you can use the “docker push” command to push your image to a specific repository.

Thank you for reading! I hope you find this article helpful.