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4 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 →Fix Docker port is already allocated, address already in use, and EADDRINUSE errors on Windows and Linux without stopping the wrong process.
Read guide →A practical Ubuntu VPS checklist covering a sudo user, SSH keys, UFW, security updates, swap, backups, monitoring, and final checks before deployment.
Read guide →Learn how Docker works through images, containers, Dockerfiles, volumes, networks, and Compose with a practical Node.js example.
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