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Welcome
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Layers and Tags: The Building Blocks of Images
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🛠️ Demo: Layers in Practice
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Multi-Stage Builds
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🛠️ Demo: Multi-Stage Builds in Action
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Tags and Digests
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Single v. Multi-Architecture Images
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Advanced Build Techniques
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🛠️ Demo: Copying from a Builder Stage
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Advanced Build Techniques: Complex Additions
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🛠️ Demo: Using the Dev Variant with Package Removal
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Advanced Build Techniques: Using a chroot'ed apk add
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🛠️ Demo: Using a chroot’ed apk add
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Advanced Build Techniques: Ephemeral Mounts
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Custom Assembly
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Other Tools
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Thank you!
Containers 102: Practical Image Migration Skills
Course 9 of 14 in Chainguard Containers Onboarding Guide
Hands-on tactics to keep images small, secure, and portable while you migrate to Chainguard.
Go beyond the basics to understand how layers, tags, and multi-architecture images really work—and why they matter during migrations. Learn advanced build strategies for distroless runtimes (multi-stage builds, dependency handling with APK/chroot), plus the tooling (docker history, Dive, Crane, chainctl) you’ll use to diagnose size, security, and tag/digest changes.
Course
Learn the tools and fundamentals of vulnerability management and why it's critical that every developer understand it.