Update README with friendlier tone

Focus on Wolfi benefits rather than competitor comparisons.
Highlight lightweight nature and automatic updates.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

README.md

@@ -1,6 +1,6 @@
 # Flutter SDK Docker Images
 
-Minimal, secure Flutter SDK images for CI/CD pipelines. Built on [Wolfi](https://wolfi.dev) for a smaller footprint and zero CVEs.
+Lightweight Flutter SDK images for CI/CD pipelines. Built on [Wolfi](https://wolfi.dev), a security-focused Linux distribution designed for containers.
 
 ## Images
 
@@ -10,23 +10,21 @@ Minimal, secure Flutter SDK images for CI/CD pipelines. Built on [Wolfi](https:/
 | `svrnty/flutter-sdk:android-latest` | Android APK/AAB builds | ~1.7 GB |
 | `svrnty/flutter-sdk:linux-latest` | Linux desktop builds | ~1.3 GB |
 
-### Size Comparison
+## Why Wolfi?
 
-| Image | Size |
-|-------|------|
-| **svrnty/flutter-sdk:android** | **1.7 GB** |
-| cirrusci/flutter:stable | 4.5 GB |
-| ghcr.io/cirruslabs/flutter:stable | 6.8 GB |
+[Wolfi](https://wolfi.dev) is a lightweight Linux distribution built specifically for containers. It provides:
 
-Up to **75% smaller** than alternatives.
+- **Minimal footprint** - Only essential packages, nothing extra
+- **Daily security updates** - Patches applied quickly
+- **Designed for containers** - No legacy cruft from traditional distros
 
 ## Features
 
-- **Zero CVEs** - No critical, high, or medium vulnerabilities
+- **Lightweight** - Optimized for fast CI/CD pulls
+- **Secure** - Built on Wolfi with continuous vulnerability scanning
 - **Multi-arch** - Supports both `linux/amd64` and `linux/arm64`
 - **Non-root** - Runs as unprivileged user (UID 65532)
-- **Minimal** - Only includes dependencies needed for each platform
-- **SBOM & Provenance** - Full supply chain attestations included
+- **Supply chain security** - SBOM and SLSA provenance attestations included
 
 ## Usage
 
@@ -94,13 +92,13 @@ jobs:
 - `<variant>-<version>` - Specific Flutter version (e.g., `android-3.38.9`)
 - `<variant>-dev` - Pre-release testing
 
-## Security
+## Automatic Updates
 
-All images are:
-- Scanned with Docker Scout on every release
-- Built with SBOM and SLSA provenance attestations
-- Based on Wolfi (minimal attack surface)
-- Automatically updated when new Flutter versions are released
+Images are automatically rebuilt when:
+- New Flutter stable versions are released
+- Base image security updates are available
+
+Every build is scanned and includes supply chain attestations (SBOM, SLSA provenance).
 
 ## License