Containers
In-depth guides and analysis on containers from the Safeguard engineering team.
100 articles
What a Cloud Native Security Platform Actually Does
A cloud native security platform unifies posture, workload, and supply chain controls for containerized apps. Here is what the category covers and how to tell the marketing from the substance.
Python Dockerfile Best Practices for Secure, Small Images
The Python Dockerfile best practices that matter most for security are running as a non-root user, choosing a slim base, using multi-stage builds, and pinning dependencies. Here is a working reference Dockerfile and why each line is there.
Python Docker Images: How to Choose a Secure, Slim Base
Choosing among Python Docker images comes down to trade-offs between size, glibc compatibility, and attack surface. Here is how the official tags differ and how to build a lean, low-CVE image.
Kubernetes SecurityContext Capabilities: Drop vs Add
Kubernetes securityContext capabilities let you strip Linux kernel privileges from a container instead of accepting the runtime default set — here's when to drop, when to add back, and why dropping ALL first is the right starting point.
How .dockerignore Protects Your Builds: A Security Guide
A well-written docker ignore file keeps secrets, git history, and local cruft out of your images — one of the cheapest and most overlooked container security wins.
Kubernetes Security Risks: The Threats That Actually Matter
The real Kubernetes security risks are misconfiguration, over-permissive RBAC, exposed control planes, and vulnerable images, not exotic zero-days. Here's how to prioritize.
Docker Privileged Mode: What --privileged Really Grants and Safer Options
Docker Compose privileged mode hands a container nearly all host capabilities. Here is what --privileged actually turns on, and the scoped alternatives that do the same job safely.
Docker Privileged Containers: `docker run` and Compose Risks
docker run privileged and docker compose privileged both hand a container root-equivalent access to the host — here's exactly what that means and when, if ever, it's justified.
Kubernetes securityContext: fsGroup and the Fields People Skip
A field-by-field walkthrough of Kubernetes securityContext — fsGroup, runAsNonRoot, and the settings teams leave at their insecure defaults.
Open Source Container Security: A Practical Guide
You can build a solid container security stack entirely from open source tools — here's which ones cover which layer, and where the gaps show up at scale.
Secure Docker Images: A Practical Checklist
A working checklist for building secure Docker images, from base image choice through image scanning, that you can actually apply to an existing Dockerfile this week.
Container Vulnerability Management: The Full Lifecycle
Container vulnerability management is a lifecycle, not a scan — here's what happens from base image selection through runtime, and where most programs quietly fall apart.
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