LinuxKit v1.8.2+ requires double-dash flags (--format, --name, etc.)
instead of single-dash flags. The old flags were being parsed incorrectly,
e.g., `-name` was interpreted as `-n` with value `ame`.
Files updated:
- pkg/build/builders/linuxkit.go
- pkg/php/container.go
- pkg/release/publishers/linuxkit.go
- pkg/release/publishers/linuxkit_test.go
Fixes#50
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
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