Enhance build scripts with datetime versioning

- Add datetime-based version tagging (YYYYMMDD_HHMMSS format)
- Support both automatic versioning and manual version override
- Build with both latest and version tags simultaneously
- Update both Linux (.sh) and Windows (.bat) build scripts
- Add detailed build output with next steps guidance

🤖 Generated with [Claude Code](https://claude.ai/code)

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

build.sh

@@ -4,15 +4,24 @@
 set -e
 
 IMAGE_NAME="xwindow-korean-dotnet"
-VERSION="latest"
 
-echo "🐳 Building Docker image: $IMAGE_NAME:$VERSION"
+# 버전 태그 설정 (날짜시간 기반 또는 인자로 받기)
+if [ -n "$1" ]; then
+    VERSION="$1"
+else
+    VERSION=$(date +%Y%m%d_%H%M%S)
+fi
 
-# 빌드 시작
-docker build -t $IMAGE_NAME:$VERSION .
+echo "🐳 Building Docker image: $IMAGE_NAME:latest and $IMAGE_NAME:$VERSION"
+
+# 빌드 시작 (latest와 버전 태그 동시 적용)
+docker build -t $IMAGE_NAME:latest -t $IMAGE_NAME:$VERSION .
 
 echo "✅ Build completed successfully!"
+echo "🏷️  Tagged as:"
+echo "   - $IMAGE_NAME:latest"
+echo "   - $IMAGE_NAME:$VERSION"
 echo "📋 Next steps:"
 echo "   - Test: docker run -p 3389:3389 $IMAGE_NAME:$VERSION"
-echo "   - Push: docker push $IMAGE_NAME:$VERSION"
-echo "   - Multi-platform: docker buildx build --platform linux/amd64,linux/arm64 -t $IMAGE_NAME:$VERSION --push ."
+echo "   - Push both tags: docker push $IMAGE_NAME:latest && docker push $IMAGE_NAME:$VERSION"
+echo "   - Multi-platform: docker buildx build --platform linux/amd64,linux/arm64 -t $IMAGE_NAME:latest -t $IMAGE_NAME:$VERSION --push ."