Title: Day 13/25: Production-Ready Security: Running Containers as Non-Root (Principle of Least…

📰 Medium · DevOps

Learn to secure your containerized applications by running them as non-root users, following the principle of least privilege

intermediate Published 19 Apr 2026
Action Steps
  1. Create a new user and group in your Dockerfile using the USER instruction
  2. Configure the permissions of the new user to limit access to sensitive resources
  3. Run your containerized application as the new non-root user
  4. Test and verify that the application works as expected with the new user
  5. Implement this security practice in your CI/CD pipeline to ensure consistency across all deployments
Who Needs to Know This

DevOps and security teams can benefit from this knowledge to ensure the security of their containerized applications

Key Insight

💡 Running containers as non-root users reduces the attack surface and prevents privilege escalation attacks

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🚨 Secure your containers by running them as non-root users! 🚨 Follow the principle of least privilege to reduce attack surfaces #DevOps #Security
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