docs: fix docsrs attributes

Author: DDtKey

testcontainers/src/core/image/runnable_image.rs

@@ -111,7 +111,7 @@ impl<I: Image> RunnableImage<I> {
     /// Returns a new RunnableImage with the specified arguments.
     ///
     /// # Examples
-    /// ```
+    /// ```rust,no_run
     /// use testcontainers::{core::RunnableImage, GenericImage};
     ///
     /// let image = GenericImage::default();

testcontainers/src/lib.rs

@@ -1,5 +1,7 @@
 #![deny(missing_debug_implementations)]
 #![warn(rust_2018_idioms)]
+#![cfg_attr(docsrs, deny(rustdoc::broken_intra_doc_links))]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 
 //! A library for integration testing against docker containers from within Rust.
 //!