Update devContainer.json

containers/docker-existing-docker-compose/.vscode/devContainer.json

@@ -1,14 +1,14 @@
 {
     "name": "Existing Docker Compose",
 
-    // Most of the configuration is in the .devcontainer/docker-compose.yml file
+    "//": "Most of the configuration is in this .devcontainer/docker-compose.yml file",
     "dockerComposeFile": ".devcontainer/docker-compose.yml",
 
-    // This is the name of the service that extends from your existing service. Set the
-    // real service name in .devcontainer/docker-compose.yml
+    "//": "The service property is the name of the service that extends your existing service \
+           in .devcontainer/docker-compose.yml. Update the real service name and file path there."
     "service": "devcontainer",
 
-    // Path to where VS Code should start when connected to the service. This is typically
-    // a file mount in .devcontainer/docker-compose.yml
+    "//": "The volume property is the path VS Code should open by default when connected to the service. \
+           This is typically a file mount in .devcontainer/docker-compose.yml"
     "volume": "workspace"
-}
+}