Why Docker Builds Are Slow: Layer Cache Explained
Layer caching is your build's BFF. Learn why copying files early kills the cache and how to fix it.
Tag: docker
All the articles with the tag "docker".
Docker Exit Codes: Why Your Container Keeps Restarting
Decode Docker exit codes: 0 (success), 1 (app error), 125/126/127 (Docker errors), 137 (OOM), 143 (SIGTERM). Debug restarts in minutes.
The .dockerignore File You're Not Writing
Missing .dockerignore bloats build context, slows builds, and leaks secrets. Here's the one you should copy-paste.
Why Your Docker Logs Are Eating Your Disk
Docker's default JSON logging driver writes unbounded logs to disk. Learn how to set log rotation and reclaim your storage.
Why Your Docker Container Ignores Ctrl+C
PID 1 doesn't receive signals by default. Learn why Ctrl+C fails in containers and fix it with tini or exec form CMD.
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.
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.
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.
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.
Multiple Actions with a Single docker exec Call
Run multiple commands in one docker exec call using sh -c — pipe commands, chain with && or ;, and avoid repeated container roundtrips.
WordPress, Docker, NGINX, and MySQL via Ansible
Automate a full WordPress stack deployment — Docker, nginx, and MySQL — using Ansible playbooks instead of clicking through wizards.
Uptime Monitoring with Uptime Kuma
Uptime Kuma monitors your services and sends alerts when they go down — beautiful self-hosted alternative to UptimeRobot.