[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["難以理解","hardToUnderstand","thumb-down"],["資訊或程式碼範例有誤","incorrectInformationOrSampleCode","thumb-down"],["缺少我需要的資訊/範例","missingTheInformationSamplesINeed","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間:2025-09-04 (世界標準時間)。"],[],[],null,["# Build runtime\n\nThe Build runtime is the environment Apps are built in.\n\nEnvironment variables\n---------------------\n\nEnvironment variables are injected into the Build at runtime.\nVariables are added based on the following order, where later values override\nearlier ones with the same name:\n\n1. Space (set by administrators)\n2. App (set by developers)\n3. System (set by Kf)\n\nKf provides the following system environment variables to Builds:\n\n| **Note:** The environment variables Kf provides to Builds are a subset of those provided to [App Runtime](/migrate/kf/docs/2.6/how-to/app-runtime)."]]