Mastering Container Security: Hardening Podman, Rootless Docker, and Linux Containers for Modern DevSecOps

Secure Containers. Verify Supply Chains. Enforce Zero-Trust - This Is the New Era of Container Security.

Containers run the world's infrastructure - but most are still deployed with default privileges, insecure images, and weak runtime visibility. Mastering Container Security rewrites that playbook with a complete, practical guide to hardening Podman, Rootless Docker, and modern Linux container stacks for real-world DevSecOps environments.

Built for 2025 and beyond, this book bridges security engineering, cloud-native architecture, and hands-on DevOps practice. You'll move from understanding the threat landscape to building fully rootless, signed, monitored, and policy-driven container platforms using today's most advanced open-source tools.

• Build rootless Podman and Docker containers with secure user namespaces, UID mapping, and kernel isolation.
• Apply CIS Benchmarks, NIST SP 800-190, and MITRE ATT&CK mappings to real-world container environments.
• Harden hosts with Seccomp, AppArmor, SELinux, and No New Privileges (NNP).
• Generate and sign SBOMs with Syft, Trivy, and cosign, then enforce image integrity in Harbor and GitHub Actions pipelines.
• Detect runtime threats with Falco and Tetragon, using eBPF-based auditing for privilege escalation and container escapes.
• Automate security controls across CI/CD pipelines with Jenkins, Drone CI, and OPA policy gates.
• Integrate Zero-Trust principles, workload attestation, and TPM-based verification for next-gen confidential computing.

Each chapter ends with a Practice Lab, ensuring you build, test, and verify every technique - culminating in a full-stack DevSecOps project that deploys a signed, monitored, and policy-enforced container platform from scratch.

• DevSecOps Engineers securing containers in regulated or high-trust environments.
• System Administrators and SREs building hardened rootless infrastructures.
• Cloud-Native Developers embedding security into the build and deploy pipeline.
• Security Analysts seeking real-time detection and response visibility at the container level.

Every configuration, command, and YAML example in this book has been tested on Podman, Docker, and Linux distributions (Fedora, Ubuntu, RHEL, Rocky Linux) - ensuring reproducibility in both enterprise clusters and homelab environments.

From image signing and policy enforcement to eBPF-driven runtime defense, this book delivers the complete blueprint for container security maturity in the age of rootless and trustless DevOps.

Protect your containers. Prove your trust. Automate your defense.
Start mastering modern container security today.