Day 17 ::Docker Unleashed; A Beginner's Expedition into Containerization Magic.
Table of contents
Dockerfile -
It's a set of instructions that ensures software applications have everything they need to run smoothly. It's an architectural blueprint that ensures software is constructed and configured reliably. Just as an architect designs and oversees the construction of a house, a Docker file designs and orchestrates the creation of software environments.
Goal is - Create a Dockerfile for a simple web application, make a docker file, build an image, run it, and push it to the docker hub.
Our first step is to create a Dockerfile, a special blueprint that will guide Docker in building our web application container. As adventurers, we can choose a simple web application, such as Python app, to showcase the magic of Docker. With our code editor open and creativity flowing, let's craft our Dockerfile.
Our second step Docker Image Construction With our Dockerfile ready, it's time to set sail on the high seas of containerization by building our Docker image. Open your terminal or command prompt, navigate to the directory containing the Dockerfile, and run the following command:
docker build -t reactapp:latest
Our third step Launching the Container: running our container and unleashing our web application upon the world! Execute the following command to start the container:
Open your web browser and enter the URL http://localhost:8080 to access your application. You should see your web application running successfully.
To push our image to Docker Hub, follow these steps:
Log in to Docker Hub using the command:
docker loginTag your image with your Docker Hub username and repository name:
docker tag kpreact-app your-username/your-repo:latestPush the tagged image to the repository:
docker push your-username/your-repo:latest
Congratulations, brave Docker adventurers! We've embarked on a remarkable journey, discovering the power of Docker's containerization magic. By creating a Dockerfile, building our image, launching the container, verifying our web application, and anchoring it at a repository, we've harnessed the transformative capabilities of Docker. As beginners, we've witnessed firsthand the incredible potential that containers offer in simplifying software deployment. So, hoist the Docker flag high, and continue exploring the boundless opportunities that lie ahead in the world of containerization. Fair winds and happy Docker voyages!
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