debug: CI上のdocker saveの構造を確認するデバッグ出力を追加

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: massongit

scripts/deploy_hato_bot/update_uv_version/get_uv_version.sh

@@ -8,6 +8,15 @@ trap 'rm "$tmp_tar"' EXIT
 docker save "$image_tag" -o "$tmp_tar"
 home_uv_path=$HOME/uv
 
+echo "=== manifest.json Layers ===" >&2
+tar -xOf "$tmp_tar" manifest.json | jq -r '.[0].Layers[]' >&2
+
+first_layer=$(tar -xOf "$tmp_tar" manifest.json | jq -r '.[0].Layers[0]')
+echo "=== first layer file type ===" >&2
+tar -xOf "$tmp_tar" "$first_layer" 2>/dev/null | file - >&2
+echo "=== first layer contents (head 10) ===" >&2
+tar -xOf "$tmp_tar" "$first_layer" 2>/dev/null | gunzip 2>/dev/null | tar -tf - 2>/dev/null | head -10 >&2
+
 for layer in $(tar -xOf "$tmp_tar" manifest.json | jq -r '.[0].Layers[]'); do
   uv_path=$(tar -xOf "$tmp_tar" "$layer" 2>/dev/null | gunzip 2>/dev/null | tar -tf - 2>/dev/null | grep -E "usr/local/bin/uv$" | head -1)