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Stage names in a multi-stage build should be unique.
| Property | Value |
|---|
| Severity | Error |
| Category | Correctness |
| Default | Enabled |
Description
Defining multiple stages with the same name results in an error because the
builder is unable to uniquely resolve the stage name reference.
Examples
Bad:
FROM debian:latest AS builder
RUN apt-get update; apt-get install -y curl
FROM golang:latest AS builder
FROM debian:latest AS deb-builder
RUN apt-get update; apt-get install -y curl
FROM golang:latest AS go-builder
Supersedes
Reference