I'm an aspiring DevOps Engineer building my foundation in Linux, containerization, automation, and infrastructure.

I'm learning by building practical projects, documenting what I learn, and sharing the problems, mistakes, and solutions along the way.

• Linux & Systems: Debian, Bash, system administration, and LPIC-1 preparation
• Containers: Docker, Docker Compose, and production containerization
• CI/CD: GitHub Actions, automated testing, and automated image publishing
• Networking: Linux and container networking fundamentals
• Infrastructure: Deployment, automation, monitoring, and service reliability
• Cloud: Building toward cloud infrastructure and modern deployment workflows

A lightweight service monitoring application with a web dashboard and REST API, built with Node.js, Express, and PostgreSQL.

Highlights:

• Web-based service monitoring dashboard
• Register, edit, delete, and search monitored services
• HTTP/HTTPS health checks with timeout handling
• Real-time healthy / unhealthy service status
• PostgreSQL persistence
• REST API for service management
• Light and dark dashboard themes
• Automated testing with Jest and Supertest
• Dockerized with Docker and Docker Compose
• Optimized production Docker image using node:24-bookworm-slim
• Production image excludes development dependencies
• ESLint and Prettier for code quality
• GitHub Actions CI pipeline
• Automated Docker image publishing to GHCR
• Docker image optimized from approximately 1.7 GB to 410 MB

Stack: Node.js · Express · PostgreSQL · Jest · Supertest · Docker · Docker Compose · GitHub Actions · GHCR

I document my technical journey step-by-step, including:

• Things I learn
• Projects I build
• Bugs I encounter
• Problems I solve
• Infrastructure experiments
• Technical notes and practical setups

Telegram: @aljdev

• Telegram: @aljdev
• LinkedIn: Coming soon

Building in public — one bug, fix, and deployment at a time.