Moonray

Your Docker containers are slow, bloated, and vulnerable. And you’re probably making the same mistakes 90% of engineers make in production. Take my advice and please • Don’t use “latest” tags, instead use specific versions like node:18.17-alpine • Don’t build single-stage fat images; instead, use multi-stage builds to get 50MB images instead of 800MB • Don’t run containers as root, instead, create a non-root user for security • Don’t copy everything with COPY . ., instead use .dockerignore and specific COPY commands • Don’t let containers use unlimited resources, instead set proper memory and CPU limits • Don’t deploy without health checks, instead add HEALTHCHECK commands so Kubernetes knows your app works • Don’t create 20 separate RUN layers, instead combine commands with && to minimize layers • Don’t skip security scanning, instead use docker scan or Trivy in your CI/CD pipeline • Don’t use full OS images for simple apps, instead use scratch or distroless base images • Don’t write logs to files inside containers; instead, log to stdout/stderr and let orchestrators handle collection These practices make the difference between hobby projects and production systems. Your containers should be fast, secure, and predictable. Not slow, vulnerable time bombs.