ReservedStageName
目录
输出
'scratch' is reserved and should not be used as a stage name描述
在多阶段构建中，不应将保留字用作阶段的名称。保留字为：
contextscratch
示例
❌ 不推荐：`scratch` 和 `context` 是保留名称。
FROM alpine AS scratch
FROM alpine AS context✅ 推荐：阶段名称 `builder` 未保留。
FROM alpine AS builder