Fix trailing whitespace

02_basic_concept/2.2_container.md

@@ -20,7 +20,7 @@ flowchart TD
         direction TB
         N1["• 共享系统资源<br/>• 共享网络<br/>• 共享文件系统"]
     end
-    
+
     subgraph ContainerProcess ["容器进程 (运行在宿主机内核上)"]
         direction TB
         C1["• 独立进程空间<br/>• 独立网络环境<br/>• 独立文件系统<br/>• 独立用户空间"]
@@ -51,7 +51,7 @@ flowchart TD
         VMHW[Hardware]
         VMApp --> VMGuest --> V --> VMH --> VMHW
     end
-    
+
     subgraph Container ["容器 (所有容器共享宿主机内核)"]
         direction TB
         subgraph CApp ["应用层"]
@@ -89,7 +89,7 @@ flowchart TD
     ImageLayerN1["镜像第 N-1 层（只读）"]
     Dots["..."]
     ImageLayer1["镜像第 1 层（只读）<br/>基础镜像层"]
-    
+
     ContainerLayer --> ImageLayerN --> ImageLayerN1 --> Dots --> ImageLayer1
 ```
 
@@ -157,11 +157,11 @@ stateDiagram-v2
     Running --> Stopped : docker stop
     Running --> Paused : docker pause
     Paused --> Running : docker unpause
-    
+
     Created --> Deleted : docker rm
     Stopped --> Deleted : docker rm
     Paused --> Deleted : docker rm
-    
+
     Deleted --> [*]
 ```
 图 2-1：容器生命周期状态流转图