ShieldOps Container Security Guides

Discover the latest practices and guides for Docker, Kubernetes, and DevSecOps.

Docker Compose Security: Hardening Multi-Service Deploymentsdocker

Docker Compose Security: Hardening Multi-Service Deployments

A single misplaced ports: directive in docker-compose.yml can expose your entire backend. Learn the 7-step framework to harden multi-container deployments — network isolation, non-root users, capability drops, secrets management, image pinning, healthchecks, and continuous audit.

2026-06-07Read More ⟶
Multi-Stage Docker Builds: Security and Size Optimization Guidedocker

Multi-Stage Docker Builds: Security and Size Optimization Guide

Multi-stage Docker builds are the single most effective technique for reducing container image size and eliminating unnecessary attack surface. This guide walks through every stage, from basic implementation to advanced security patterns.

2026-06-06Read More ⟶
Dockerfile FROM Instruction Risks: Choosing Secure Base Imagesdocker

Dockerfile FROM Instruction Risks: Choosing Secure Base Images

The FROM instruction is the single most impactful security decision in any Dockerfile. Learn how to choose trusted base images, pin digests, and eliminate the largest class of container vulnerabilities at the source.

2026-06-05Read More ⟶
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