Best of Docker — July 2025

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   Docker·47w

   Top 5 MCP Server Best Practices

   Five essential best practices for building MCP (Model Context Protocol) servers: manage tool budget by avoiding one-tool-per-endpoint patterns, design for AI agents rather than end users with proper error handling, document for both human users and AI agents, test user interactions beyond just functionality using MCP inspector, and package servers as Docker containers for portability. The guide emphasizes that AI agents are the actual consumers of MCP tools, requiring different design considerations than traditional user-facing APIs.

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   Docker·45w

   Fiber v3 Services + Testcontainers: Next-Gen Local Dev in Go

   Fiber v3 introduces a new Services API that integrates with Testcontainers to manage backing services like databases directly within your application lifecycle. This approach eliminates the need for external orchestration scripts and provides a clean, reproducible local development environment. The tutorial demonstrates building a Go application that automatically starts a PostgreSQL container using the new Services abstraction, with hot-reloading support via air and container reuse for faster development loops.

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   Docker·46w

   Docker Compose: Powering the Full App Lifecycle

   Docker Compose serves as the backbone for application lifecycle management, unifying development from local setup through production deployment. The new Docker Compose Bridge feature enables teams to use a single compose.yaml file to manage multi-container applications across all environments, automatically generating Kubernetes manifests with security policies, network configurations, and compliance features. This approach eliminates configuration drift, reduces manual errors, and streamlines CI/CD pipelines by maintaining consistency between local development and production environments.

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   Docker·47w

   Docker State of App Dev

   Docker's 2025 State of Application Development Survey reveals key insights from over 4,500 industry professionals about developer productivity and experience. Self-guided learning dominates with 85% using online courses, while container adoption shows a divide between IT professionals (92%) and general developers (30%). Time estimation emerges as the universal pain point across all roles, followed by task planning and pull request reviews. The survey highlights that productivity depends on both better tooling and healthy team culture, with developers valuing work-life balance but seeking improvement in career development and recognition.

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