added example for nerdctl + testing nerdctl (still a bug with running container from image)

examples/nerdctl.rs

@@ -17,7 +17,8 @@ pub fn run_nerdctl_example() -> Result<(), NerdctlError> {
     
     // Step 2: Create a container from the image
     println!("\n=== Creating container from nginx:latest ===");
-    let run_result = nerdctl::run("nginx:latest", Some("my-nginx"), true, Some(&["8080:80"]))?;
+    // Use "native" snapshotter to avoid overlay mount issues
+    let run_result = nerdctl::run("nginx:latest", Some("my-nginx"), true, Some(&["8080:80"]), Some("native"))?;
     println!("Container created: {}", run_result.stdout.trim());
     let container_id = "my-nginx"; // Using the name we specified
     
@@ -47,7 +48,8 @@ pub fn run_nerdctl_example() -> Result<(), NerdctlError> {
     
     // Step 7: Create a new container from our custom image
     println!("\n=== Creating container from custom image ===");
-    nerdctl::run(image_name, Some("nginx-custom"), true, Some(&["8081:80"]))?;
+    // Use "native" snapshotter to avoid overlay mount issues
+    nerdctl::run(image_name, Some("nginx-custom"), true, Some(&["8081:80"]), Some("native"))?;
     println!("Custom container created");
     
     // Step 8: List images
@@ -78,5 +80,5 @@ pub fn run_all_examples() -> Result<(), NerdctlError> {
 }
 
 fn main() {
-    run_all_examples();
+   let _ = run_all_examples().unwrap();
 }