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## Output
```text
Setting platform to predefined $TARGETPLATFORM in FROM is redundant as this is the default behavior
```
## Description
A custom platform can be used for a base image. The default platform is the
same platform as the target output so setting the platform to `$TARGETPLATFORM`
is redundant and unnecessary.
## Examples
❌ Bad: this usage of `--platform` is redundant since `$TARGETPLATFORM` is the default.
```dockerfile
FROM --platform=$TARGETPLATFORM alpine AS builder
RUN apk add --no-cache git
```
✅ Good: omit the `--platform` argument.
```dockerfile
FROM alpine AS builder
RUN apk add --no-cache git
```
|
