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Learn Docker

Pack, containerize, deploy, and scale web applications consistently. Docker is an open-source platform that automates the deployment of applications inside lightweight, portable software containers. It eliminates the "works on my machine" problem entirely.

Standard devops skill needed to deploy applications to modern cloud systems (AWS, Kubernetes).

Isolates dependencies to ensure applications run identically across developer laptops and production servers.

Speeds up onboarding and deployment pipelines significantly.

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Step-by-step master plan, cheat sheets, interview preparation templates, and recommended projects compiled by engineering leads.

Interactive Learning Resources

Curated Tutorials

Writing Production Dockerfiles

20 MinsBeginner

Write container specifications for Node.js or Python applications utilizing multi-stage builds to optimize image sizes.

Specify minimal base images like Alpine to reduce footprint and security vulnerabilities.
Copy dependency manifests first to leverage Docker's layer caching mechanism.
Expose active ports and declare entrypoint commands.

Multi-Container Orchestration

30 MinsIntermediate

Use Docker Compose to launch a frontend, backend, and database container simultaneously on isolated networks.

Write a docker-compose.yml configuration declaring services and networks.
Mount local folders as persistent volumes to allow hot-reloading.
Establish startup sequences using depends_on rules.

Practice Project

Self-Healing Cloud App Deployment Stack

Create a multi-tier containerized stack deployed on cloud VMs with automated log collection and health check scripts.

Key Implementation Deliverables:

Containerize separate frontend, backend, and Redis service layers.
Configure Docker health checks to monitor service health status.
Expose unified container logs to external log analyzers.

Project DifficultyAdvanced

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