Tag: docker
All the articles with the tag "docker".
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Stop Living Dangerously on :latest Docker
Using :latest in production is a ticking time bomb. Pin your Docker image versions or watch a surprise update break everything at 2 AM.
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Alpine vs. Distroless: Choosing Your Minimalist Base
Alpine gives you a shell and apk; Distroless gives you nothing but the app. Compare attack surface, image size, and multi-stage build complexity.
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Distroless: How to Build Slim, Secure Containers
Distroless images contain only your app and its runtime — no shell, no package manager, no attack surface. Here's how to build them.
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Understanding and Optimizing Docker’s daemon.json File
daemon.json controls how the Docker daemon behaves — logging drivers, storage drivers, registry mirrors, and the options worth tuning.
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Docker Networking Essential Guide for All Skill Levels
Bridge, host, overlay, macvlan, and none — every Docker network mode explained with real use cases from beginner to production.
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Docker Volume Mounts: Essential Flags
The -v and --mount flags for Docker volumes explained — bind mounts vs named volumes, read-only, propagation, and tmpfs options.
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How to Transfer docker Images Without a Repository
Move Docker images between hosts without a registry using docker save and docker load — air-gapped deployments made simple.
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Understanding CMD and ENTRYPOINT in Dockerfiles
CMD and ENTRYPOINT both define what runs in a container but work differently — exec vs shell form, and how they interact when combined.
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Copying Files Between Docker Containers and Host Machines
Use docker cp to move files between running containers and your host machine — no volumes needed for one-off file transfers.
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Dockerfile: Differences Between COPY and ADD
COPY and ADD look similar but ADD auto-extracts tarballs and fetches URLs — know when each is appropriate and why COPY is usually better.
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Docker Strategies for Load Balancing and Failover
Add load balancing and failover to your Docker setup using Swarm, nginx, HAProxy, and Keepalived — high availability without Kubernetes.
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Docker Networking: Connecting to the Host from a Container
Access services on the host machine from inside a Docker container using host-gateway or host.docker.internal — no hardcoded IPs.