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Nnamdi Felix IbeSep 16, 2026 • 4 min read
Day 43: A Port Is Closed Until You Publish It, and an AZ Name Is Not an AZ
Today both tasks turned on reading a label correctly. A port number on the host is not the port...
#devops#docker#aws#containers
20 1
Alex GeorgievSep 21, 2026 • 7 min read
Traefik 3.6's multi-layer routing held up against 500 concurrent header-spoofing attempts
I tested Traefik 3.6's new parentRefs routing: 0 of 500 concurrent requests bypassed a parent router...
#traefik#docker#security#devops
7 0
Raju DandigamSep 21, 2026 • 4 min read
Build a Reproducible AI Agent Evaluation Lab with Docker Compose
An agent evaluation fails in CI but passes locally. Before blaming the model, ask whether both runs....
#docker#ai#testing#devops
6 1
Raju DandigamSep 22, 2026 • 3 min read
Same Model, Three APIs: Contract-Testing with Docker Model Runner
“OpenAI-compatible” is useful shorthand. It is not a portability guarantee. Two APIs may accept...
#docker#ai#playwright#typescript
3 0
Onkar Raghunath ShelkeSep 17, 2026 • 10 min read
Kubelet watches inodes. Just not until it's an emergency.
A worker node pages with NodeFilesystemFilesFillingUp. It's on course to run out of inodes. You chec...
#kubernetes#devops#linux#docker
1 1
Raphael Gab-MomohSep 17, 2026 • 14 min read
Containerizing ORIN: From Docker to Azure App Service and a Plain VM
Two Deployment Targets, One Container ORIN — "The Sound of Africa" — is a live audio...
#azureappservice#azurevm#docker#cicd
0 0
Sunny SahijwaniSep 16, 2026 • 12 min read
How long does a Redis Sentinel failover actually take? I measured it
I killed an in-memory database primary on purpose — fifteen times, across three...
#redis#devops#docker#database
0 0
Karthik K PradeepSep 20, 2026 • 9 min read
I Built a CI/CD Platform From Scratch — From PipelineOS to OdinRun
The engineering journey behind OdinRun: building a self-hosted, observable, self-healing, and...
#cicd#devops#docker#opensource
0 0
Nnamdi Felix IbeSep 18, 2026 • 4 min read
Day 44: Compose Stopped Needing a Version, and the CLI Gives You No Grace Period
Two defaults today, both of them different from what a reasonable person would assume. Compose no...
#devops#docker#aws#containers
10 0
Raphael Gab-MomohSep 17, 2026 • 5 min read
Multi-Stage Builds: What Actually Gets Thrown Away
The Claim Everyone Makes, Measured for Once Every Docker tutorial says the same thing:...
#docker#multistagebuilds#buildkit#containerimages
0 0
Zoltan CsizmadiaSep 17, 2026 • 10 min read
Docker Desktop costs money now. Your Windows box already has the engine.
Since 2021, Docker Desktop has needed a paid subscription at companies past a certain size. A lot of...
#docker#wsl#windows#devops
0 0
Vitalii NemudryiSep 18, 2026 • 10 min read
Chromium in Docker without --no-sandbox: what actually breaks
Disclosure up front: I'm Vitalii, founder of PDFik, a hosted URL/HTML-to-PDF API. The product shows....
#docker#kubernetes#security#devops
0 0
Aegira LabsSep 17, 2026 • 5 min read
Why I Built a Lightweight Rust Watcher for Linux Services & Docker Containers
Aegira: A Lightweight Self-Healing Watcher for Linux & Docker It's 2AM. Your phone...
#devops#rust#linux#docker
1 0
Xiantao CaiSep 19, 2026 • 3 min read
A container restarted 39,352 times. Every exit code was 0.
A container on one of my servers had restarted 39,352 times. Every single exit code was 0. That...
#docker#devops#debugging#node
0 4
bitpageSep 16, 2026 • 6 min read
How to migrate a stateful Docker app off a server with a dying disk
Treat a disk that fails on writes as read-only: stream pg_dump over SSH to the target, pull EOL imag...
#docker#postgres#rsync#migration
0 0
Nnamdi Felix IbeSep 19, 2026 • 5 min read
Day 45: RUN Cannot See Your Build Context, and NAT Only Goes One Way
Both of today's tasks are about direction. A Dockerfile instruction that cannot reach backwards to.....
#devops#docker#aws#networking
12 0
Nnamdi Felix IbeSep 20, 2026 • 5 min read
Day 46: Compose Wires the Whole Stack, and Permission to Invoke Is Not Permission to Act
Two things today needed wiring on both sides, and in both cases getting one side right produces...
#devops#docker#aws#serverless
20 4
The Homelab PostmortemSep 17, 2026 • 8 min read
Podman's Docker-compatible API resets a container's restart policy to 'no' on any update that omits it
TL;DR: On Podman 5.4.2 the Docker-compatible POST /containers/{id}/update endpoint always writes a.....
#podman#docker#linux#devops
1 0
EdgarasSep 21, 2026 • 8 min read
Running the PaddleOCR PDF OCR service as a one-shot job, locally and on Azure Container Apps
paddleocr-pdf-api runs as an HTTP server that accepts PDF uploads and returns markdown. Setting...
#azure#paddleocr#docker#ocr
5 0
TJ-Tronics SystemsSep 16, 2026 • 4 min read
How to deploy a dotnet application without a Dockerfile or Docker build process
When deploying a .net application to a docker container you would commonly use a Dockerfile, build.....
#docker#dotnet#linux#webdev
1 0
LooseChangeLabsSep 18, 2026 • 2 min read
Fixing "error while loading shared libraries: libnspr4.so" for Playwright with no root access
I was setting up browser automation for an AI coding agent running in a locked-down sandbox this wee...
#playwright#docker#devops#ci
2 1
Nnamdi Felix IbeSep 21, 2026 • 4 min read
Day 47: Copy Requirements Before the Code, and SQS Has No Priority Feature
Neither of today's tasks has a setting for the thing it delivers. Docker has no switch that makes...
#devops#docker#aws#containers
8 0
StarkManSep 17, 2026 • 3 min read
The Unauthenticated Docker API: 298,430 Exposed Endpoints and Why Port 2375 Still Matters
ZoomEye finds 298,430 endpoints matching the unauthenticated Docker API on port 2375. Why this expos...
#zoomeye#docker#containersecurity#exposure
0 0
AmorizzSep 20, 2026 • 4 min read
Point the official Sentry SDK at self-hosted ingest (DSN only)
Keep @sentry/browser or @sentry/node 7.120.0. Change only dsn. Prove /health → 202 → Issues. Replay/...
#sentry#docker#javascript#devops
0 0