configuration of devcontainer is changed

.devcontainer/devcontainer.json

@@ -12,9 +12,22 @@
     }
   },
 
+  // Configure tool-specific properties.
+    "customizations": {
+      // Configure properties specific to VS Code.
+      "vscode": {
         // Set *default* container specific settings.json values on container create.
-  "settings": {},
-
+        "settings": {
+          // VS Code don't watch files under ./target
+          "files.watcherExclude": {
+            "**/.git/objects/**": true,
+            "**/.git/subtree-cache/**": true,
+            "**/node_modules/*/**": true
+          },
+          "editor.tabSize": 2,
+          "editor.insertSpaces": true,
+          "editor.formatOnSave": true
+        },
         // Add the IDs of extensions you want installed when the container is created.
         "extensions": [
           "dbaeumer.vscode-eslint",
@@ -23,7 +36,9 @@
           "donjayamanne.githistory",
           "eamodio.gitlens",
           "mhutchie.git-graph"
-  ],
+        ]
+      }
+    },
 
   // Use 'forwardPorts' to make a list of ports inside the container available locally.
   // "forwardPorts": [],