DDoug Niccum1d ago · 13 min readDocker Compose Node.js Environment Variables: All MethodsKey takeaways Compose injects Node.js env vars four ways: environment:, env_file, Dockerfile ENV, and host shell exports, and environment: always overrides the others. Node showing undefined usually 11Rnotes.secretstash.cloud
SSnapDeploy2d ago · 7 min readThere is no docker compose deploy button. Four honest ways to get a multi-container app into production.TL;DR: docker compose up is a development command; there is no compose-to-cloud button, and service names like http://api:8080 only resolve on the machine running Compose. Four honest ways to get a musnapdeploy.hashnode.dev
JJAY TANKOct 19 · 10 min readdocker compose depends_on does not wait for your database: fix "connection refused" on startup with healthchecksYou run docker compose up, the logs scroll, and a second later your API container is dead: api-1 | Error: connect ECONNREFUSED 172.18.0.2:5432 api-1 | psql: error: could not connect to server: Connejaytank.hashnode.dev
HHritik ranjanOct 10 · 54 min read🔐 Building SteganoVault: A Production-Grade Steganography Tool with Docker, Flask, MySQL, and Nginx📚 Table of Contents Introduction What is Steganography? Why I Built SteganoVault Project Overview Main Features Technology Stack How Steganography Works in SteganoVault System Architecture Cblogs.hritikranjan.in
LLetDraw AppOct 8 · 10 min readHow to Diagram a Docker Compose Stack (and What depends_on Really Means)Disclosure: I build LetDraw, a diagram tool. The last section shows how I generate Compose diagrams with it. Everything before that works with nothing but the Docker CLI and any drawing tool. A dockeletdraw.hashnode.dev
JJAY TANKOct 7 · 10 min readThe "DB_PASSWORD" variable is not set. Defaulting to a blank string: fixing unset ${VAR} in Docker ComposeYou run docker compose up, the logs scroll past, and somewhere near the top is a line you have probably seen a hundred times: WARN[0000] The "DB_PASSWORD" variable is not set. Defaulting to a blank stjaytank.hashnode.dev
BBlogs WorldOct 7 · 5 min readDocker Compose depends_on Is Not Readiness: Healthchecks That Actually Gate StartupYou run docker compose up, the database container starts first exactly like depends_on says, and your API still crashes with ECONNREFUSED, Connection refused, or could not connect to server. Run it agankitkhoiwal.hashnode.dev
KKingsley ErhatiemwonmonOct 5 · 10 min readDocker CI/CD Pipeline: Deploying a Containerized App to AWS EC2How I containerized The EpicBook, automated deployment with GitHub Actions, published versioned images to GHCR, and explored AI-assisted Docker security auditing. Introduction A CI/CD pipeline is morekingzcloud.hashnode.dev
JjudeSep 27 · 16 min readWhat your healthcheck actually checks: four probe bugs in a self-hosted agent runtimeThe short version When docker compose ps says the api container is unhealthy, is it right? And what is it actually checking? Our health checks turned out to have one probe that checks too hard, one thsoit-ai.hashnode.dev
HHritik ranjanSep 26 · 40 min readKubernetes Local Installation Guide for Beginners: KIND & Minikube Step-by-StepThe good news is that you can run a complete Kubernetes cluster directly on your laptop. In this guide, we will learn two of the most popular ways to run Kubernetes locally: KIND — Kubernetes IN Dock1Iblogs.hritikranjan.in
