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5 articles
Understand .env, env_file, and environment in Docker Compose, inspect variables inside a container, and fix PostgreSQL passwords when a volume already exists.
Read guide →Build a safer Docker Compose production stack for Node.js and PostgreSQL with health checks, private networks, volumes, secrets, log rotation, backups, and rollback.
Read guide →Fix Docker port is already allocated, address already in use, and EADDRINUSE errors on Windows and Linux without stopping the wrong process.
Read guide →Diagnose OOM kills, RAM pressure, swap, and heavy Docker builds before changing a small VPS or restarting production services.
Read guide →Learn how Docker works through images, containers, Dockerfiles, volumes, networks, and Compose with a practical Node.js example.
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