How does Docker Compose and Multi-Container Applications relate to the docker hub?

Docker Compose and Multi-Container Applications is a core learning conceptual pillar mapped within the docker engineering hub of the DevOps Network.

Are these DevOps concepts free to learn?

Yes, all lessons, visual roadmaps, and guides on DevOps Network are 100% free with no paywalls or sign-up gates for learning content.

Docker Compose and Multi-Container Applications | DevOps Knowledge Graph

Q: What does the Docker Compose and Multi-Container Applications concept cover?

Docker Compose and Multi-Container Applications covers a variety of key topic guides, including: Understanding Docker Architecture - Daemon, Client, and Container Runtime, Running and Managing Docker Containers — The Complete Lifecycle, Debugging Docker Containers — Logs, Exec, and Inspect, Docker Resource Constraints — CPU, Memory, and cgroups, Writing Production-Grade Dockerfiles — Layers, Caching, and Best Practices, Multi-Stage Docker Builds — Smaller Images for Production, Docker Image Tagging, Versioning, and Registry Management, Optimising Docker Image Size — Techniques and Measurement, Docker Image Security Scanning — Trivy, Snyk, and ECR Scanning, Docker Networking Deep Dive — Bridge, Host, Overlay, and None, Docker DNS and Service Discovery — How Containers Find Each Other, Docker Compose Fundamentals — Defining Multi-Container Applications, Running Docker Containers Securely — Non-Root Users and Capabilities. Complete overview mapping DevOps concepts for Docker Compose and Multi-Container Applications.

01

Topic Node

Understanding Docker Architecture - Daemon, Client, and Container Runtime

Learn how the Docker daemon, CLI client, containerd runtime, and runc work together to create and manage containers on a Linux host.

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02

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Running and Managing Docker Containers — The Complete Lifecycle

Master the complete Docker container lifecycle — creating, running, stopping, restarting, and removing containers with confidence in production.

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03

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Debugging Docker Containers — Logs, Exec, and Inspect

Diagnose and fix common Docker container failures using logs, exec, inspect, and stats — the same debugging workflow used in production environments.

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04

Topic Node

Docker Resource Constraints — CPU, Memory, and cgroups

Configure CPU and memory limits on Docker containers using cgroups to prevent resource exhaustion and ensure stable multi-container host performance.

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05

Topic Node

Writing Production-Grade Dockerfiles — Layers, Caching, and Best Practices

Write lean, secure, and cache-efficient Dockerfiles for production using layer ordering, .dockerignore, non-root users, and minimal base images.

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06

Topic Node

Multi-Stage Docker Builds — Smaller Images for Production

Use multi-stage Dockerfiles to produce minimal production images by separating build dependencies from runtime artifacts, reducing image size by up to 90%.

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07

Topic Node

Docker Image Tagging, Versioning, and Registry Management

Implement a production image tagging strategy using semantic versions and git SHAs, and manage images across Docker Hub, ECR, and private registries.

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08

Topic Node

Optimising Docker Image Size — Techniques and Measurement

Reduce Docker image sizes from gigabytes to megabytes using layer squashing, minimal base images, cache mounts, and build output analysis.

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09

Topic Node

Docker Image Security Scanning — Trivy, Snyk, and ECR Scanning

Scan Docker images for CVEs and vulnerabilities using Trivy and Snyk, integrate scanning into CI/CD pipelines, and enforce policies that block unsafe images.

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10

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Docker Networking Deep Dive — Bridge, Host, Overlay, and None

Master Docker's four network drivers and understand when to use each for local development, single-host production, and multi-host cluster deployments.

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11

Topic Node

Docker DNS and Service Discovery — How Containers Find Each Other

Understand Docker's embedded DNS server, how containers resolve each other by name inside user-defined networks, and how this maps to Kubernetes CoreDNS.

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12

Topic Node

Docker Compose Fundamentals — Defining Multi-Container Applications

Define and run multi-container applications with Docker Compose — covering the compose file schema, service configuration, and essential CLI commands.

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13

Topic Node

Running Docker Containers Securely — Non-Root Users and Capabilities

Harden Docker containers for production by running as non-root, dropping Linux capabilities, and using read-only filesystems to reduce the attack surface.

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