Tag: Docker

1. Understanding Blue-Green and Rolling Deployments with Docker Containers

   Apr 19, 2025

   Every deployment without a clear strategy is a gamble with availability. Blue-Green and rolling deployments solve that problem differently, but both rely on container health checks, clean routing, and atomic switchovers. This article shows when each strategy fits and how to implement it concretely with Docker Compose and Traefik.

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2. Docker Container Checklist for Production Shops and APIs

   Apr 14, 2025

   A container that runs fine on your laptop is not yet a production-ready container. Health checks, restart policies, secrets management, resource limits and clean logging are the factors that decide between a stable production system and outages in the middle of the night.

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3. Local SSL Certificates with mkcert and Reverse Proxy in Docker

   Apr 6, 2025

   Self-signed certificates constantly trigger browser warnings and can't be used for APIs or service workers. Combining mkcert with a Docker reverse proxy solves the problem completely: local domains with real, trusted HTTPS, no cloud, no Let's Encrypt, no endless clicking.

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4. Docker Desktop Alternatives: Colima and Podman Compared

   Mar 22, 2025

   Teams looking for a Docker Desktop alternative because of licensing rules or resource usage almost always end up comparing Colima and Podman. Both replace the commercial Docker Desktop daemon with leaner, open solutions, but they differ significantly in architecture, compatibility and everyday usability for development teams.

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5. Seeding Test Data for Databases in Docker Dev Containers

   Mar 17, 2025

   Seed data is fundamentally different from plain init scripts: init scripts create the schema, seed data fills it with realistic, repeatable test data. Anyone mixing up both concepts ends up either with empty development databases or with inconsistent test states between team members.

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6. Docker Compose Secrets Instead of Environment Variables

   Mar 15, 2025

   Credentials in the environment section of a compose.yaml end up in docker inspect, in process lists and often accidentally in log output. The secrets block in Docker Compose solves this problem by delivering credentials as files inside the container instead of as visible environment variables, creating a significantly cleaner way of handling passwords and API keys.

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7. Docker Networking: Bridge, Host, DNS and Service Discovery Explained

   Mar 8, 2025

   Containers do not talk to each other automatically. Docker networks define who can reach whom, and who cannot. Bridge networks, embedded DNS, service discovery in Compose, and secure network segmentation are the building blocks of any resilient container infrastructure.

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8. Dockerfile Reviews: Spotting and Fixing Common Anti-Patterns

   Mar 7, 2025

   Many Dockerfiles grow organically and accumulate patterns along the way that bloat images, double build times, or undermine the security of the container. A structured Dockerfile review surfaces these anti-patterns before they turn into a production problem.

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9. Docker Volume Plugins for Cloud Storage Explained

   Mar 5, 2025

   Named volumes are sufficient for a single Docker host but hit limits as soon as containers on multiple hosts need to share the same data. Volume plugins for cloud storage such as REX-Ray, s3fs, or rclone mounts attach object storage directly as a volume, yet come with their own latency and consistency characteristics that must be understood before production use.

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10. When Kubernetes Is Actually Necessary (and When It Is Not)

    Feb 28, 2025

    Many teams treat Kubernetes as the obvious choice as soon as more than one server is involved, yet very few applications actually justify the operational effort of a full cluster. Knowing the real signals for genuine need lets you make the decision based on facts instead of the latest conference talk.

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