buildkit/ExposeProtoCasing - tally

Protocol names in EXPOSE instructions should be lowercase.

Property	Value
Severity	Warning
Category	Style
Default	Enabled
Auto-fix	Yes (`--fix`)

Description

Protocol names in the EXPOSE instruction should be specified in lowercase to maintain consistency and readability.

Examples

Bad:

EXPOSE 80/TcP

Good:

EXPOSE 80/tcp

Auto-fix

The fix lowercases the protocol in EXPOSE port specs.

# Before
EXPOSE 8080/TCP

# After (with --fix)
EXPOSE 8080/tcp

Reference

buildkit/ExposeProtoCasing

buildkit/ExposeInvalidFormat

buildkit/FromAsCasing

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