Contract
Build & Delivery
Fingerprinted Cache Tiers
Content-hashed CSS and JS are cached for a year as immutable; everything else is revalidated on every request and kept fresh by invalidation.
public/
2Trait
Fast
Runs often enough that it must stay quick and non-blocking.
Lifecycle
Environment & Tooling
Post-Attach Phase
Human-facing hooks that run each time a developer or editor attaches — short guidance, actionable warnings, and pointers to interactive sign-in.
.devcontainer/lifecycle/post-attach.d/
3Lifecycle
Environment & Tooling
Post-Start Phase
Fast, repeatable hooks that run on every container start to repair ephemeral state, verify prerequisites, and keep lightweight services running.
.devcontainer/lifecycle/post-start.d/
4No specification matches every filter.