🚀 Understanding Docker
Abheeshta P
Previously, developers packaged code with a handbook to guide installation.
Ops teams manually installed software based on these instructions, leading to:
Manual errors
Time-consuming setups
Docker eliminates these issues by bundling code with its working environment, ensuring it runs on any OS.
🛠️ How Docker Helps
Packages everything (code, dependencies, configurations) into Docker images.
Ensures consistency across environments.
Helps maintain multiple versions of the same software easily.
A Docker artifact includes:
The application
The command to initialize it
A defined entry point
⚡ Running Docker Applications
A Docker image is executed on a server using a Docker command.
Docker must be installed on the server to run these images.
🆚 Virtualization vs Containers
| Aspect | Virtual Machines (VMs) | Docker Containers |
| Kernel | Each VM has its own OS kernel | Uses the host's kernel |
| Resource Usage | Heavy – full OS virtualization | Lightweight – only the app layer |
| Speed | Slower due to full OS bootup | Faster as it runs on the host |
| Compatibility | Can run different OSes | Limited to the same OS kernel |
🏗️ Docker on Different OSes
Originally built for Linux.
Docker Desktop on Windows/macOS uses a VM to simulate a Linux environment.
Thanks to linkedin learning and beloved youtube!!
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Written by
Abheeshta P
Abheeshta P
I am a Full-stack dev turning ideas into sleek, functional experiences 🚀. I am passionate about AI, intuitive UI/UX, and crafting user-friendly platforms . I am always curious – from building websites to diving into machine learning and under the hood workings ✨. Next.js, Node.js, MongoDB, and Tailwind are my daily tools. I am here to share dev experiments, lessons learned, and the occasional late-night code breakthroughs. Always evolving, always building.