Merge pull request 'fix: 排除實際刪除數量為空的問題' (#8) from develop into master

Reviewed-on: #8

action.yml

@@ -144,7 +144,7 @@ runs:
         fi
         
         # 獲取並排序所有版本 (按創建時間降序)
-        SORTED_VERSIONS=$(echo "$VERSIONS_JSON" | jq '.versions | sort_by(.created_at) | reverse')
+        SORTED_VERSIONS=$(echo "$VERSIONS_JSON" | jq -r '.versions | sort_by(.created_at) | reverse')
         
         # 計算總數量
         TOTAL_COUNT=$(echo "$SORTED_VERSIONS" | jq 'length')
@@ -161,7 +161,7 @@ runs:
         echo "需要刪除 $DELETE_COUNT 個舊映像"
         
         # 獲取要刪除的版本 (跳過前 keep-count 個)
-        TO_DELETE=$(echo "$SORTED_VERSIONS" | jq -r ".[${{ inputs.keep-count }}:] | .[] | {id: .id, name: .name, created_at: .created_at}")
+        TO_DELETE=$(echo "$SORTED_VERSIONS" | jq -r ".[${{ inputs.keep-count }}:]")
         
         # 初始化刪除計數器和列表
         DELETED_COUNT=0