Class6 - Docker Commands Demystified: Running, Managing, and Inspecting Containers Efficiently
From understanding the core concepts to installing Docker on an Ubuntu VM, we covered everything that every DevOps enthusiast should know.
🚀 Class 6: Dive into Docker – The Future of Application Deployment! 🐋
In today's class, we took a deep dive into Docker and containerization! 🌐 From understanding the core concepts to installing Docker on an Ubuntu VM, we covered everything that every DevOps enthusiast should know. Let’s break down the exciting things we learned today! 👇
Why Docker?
Docker is revolutionizing how we think about deploying applications. Unlike traditional methods, Docker allows us to:
Eliminate OS dependencies by using containerized applications 🧑💻
Streamline application development with containerized environments 🌍
Core Concepts Covered 🔍
What is Docker? 🐋: The containerization platform that's changing the world of app deployment.
Containers vs. Virtual Machines: Containers are lightweight, fast, and portable compared to traditional VMs.
Real-Time Docker Scenarios and Installation 🛠️
Installing Docker on Ubuntu VM
We covered the step-by-step installation process using the terminal commands:
sudo apt-get update
sudo apt-get install docker-ce docker-ce-cli containerd.io
sudo systemctl start docker
sudo systemctl enable docker
sudo usermod -aG docker $USER
After installation, don’t forget to restart the VM for the changes to take effect! 💻🔄
Docker Command Examples
We explored practical Docker commands to work efficiently:
Checking Docker version:
docker --versionIdentifying official images from Docker Hub:
docker search httpdRunning containers in the background:
docker run -dit nginxStopping and removing containers:
docker stop $(docker ps -q)Pulling and pushing images:
docker pull httpd,docker push careerbytecode/dev:v1.0
Docker Networking & Volumes 🌐
Containers & Networking
We learned how to run a container on a dynamic port selection:
docker run -d -P --name web httpd
Docker Volumes
Explored volumes for persistent storage across container lifecycles. 💾
Private vs Public Docker Images
We covered how to create public and private Docker images and manage them via Docker Hub:
Creating and managing public repositories
Pushing and pulling images:
docker push careerbytecode/dev:v1.0Handling private repositories and securing access using role-based access control (RBAC)
Docker Administration - Best Practices ✅
Inspecting Containers
Learn how to inspect running containers:
docker container inspect <Container_name>
Pruning Exited Containers
Keep your environment clean by removing stopped or exited containers:
docker system prune
Image History
Track your images’ history for better management:
docker history <image_id>What's Next?
In the upcoming sessions, we will delve into Docker Swarm, Kubernetes, and advanced orchestration techniques to truly unlock the power of containerized applications! 🐙💡
💡 Watch Class 6 Recording now and get hands-on experience with Docker!