diff --git a/testcontainers/src/core/copy.rs b/testcontainers/src/core/copy.rs
index d821b3d5..cc6f67b5 100644
--- a/testcontainers/src/core/copy.rs
+++ b/testcontainers/src/core/copy.rs
@@ -5,8 +5,8 @@ use std::{
 
 #[derive(Debug, Clone)]
 pub struct CopyToContainer {
-    pub target: String,
-    pub source: CopyDataSource,
+    target: String,
+    source: CopyDataSource,
 }
 
 #[derive(Debug, Clone)]
@@ -24,20 +24,28 @@ pub enum CopyToContaienrError {
 }
 
 impl CopyToContainer {
-    pub fn target_directory(&self) -> Result<String, CopyToContaienrError> {
-        match path::Path::new(&self.target).parent() {
-            Some(v) => Ok(v.display().to_string()),
-            None => return Err(CopyToContaienrError::PathNameError(self.target.clone())),
+    pub fn new(source: impl Into<CopyDataSource>, target: impl Into<String>) -> Self {
+        Self {
+            source: source.into(),
+            target: target.into(),
         }
     }
 
-    pub async fn tar(&self) -> Result<bytes::Bytes, CopyToContaienrError> {
+    pub(crate) fn target_directory(&self) -> Result<String, CopyToContaienrError> {
+        path::Path::new(&self.target)
+            .parent()
+            .map(path::Path::display)
+            .map(|dir| dir.to_string())
+            .ok_or_else(|| CopyToContaienrError::PathNameError(self.target.clone()))
+    }
+
+    pub(crate) async fn tar(&self) -> Result<bytes::Bytes, CopyToContaienrError> {
         self.source.tar(&self.target).await
     }
 }
 
 impl CopyDataSource {
-    pub async fn tar(
+    pub(crate) async fn tar(
         &self,
         target_path: impl Into<String>,
     ) -> Result<bytes::Bytes, CopyToContaienrError> {
@@ -46,10 +54,10 @@ impl CopyDataSource {
 
         match self {
             CopyDataSource::File(file_path) => {
-                let mut f = &mut tokio::fs::File::open(file_path)
+                let f = &mut tokio::fs::File::open(file_path)
                     .await
                     .map_err(CopyToContaienrError::IoError)?;
-                ar.append_file(&target_path, &mut f)
+                ar.append_file(&target_path, f)
                     .await
                     .map_err(CopyToContaienrError::IoError)?;
             }
diff --git a/testcontainers/src/core/image/image_ext.rs b/testcontainers/src/core/image/image_ext.rs
index c8228503..64aa5ddb 100644
--- a/testcontainers/src/core/image/image_ext.rs
+++ b/testcontainers/src/core/image/image_ext.rs
@@ -59,8 +59,11 @@ pub trait ImageExt<I: Image> {
     fn with_mount(self, mount: impl Into<Mount>) -> ContainerRequest<I>;
 
     /// Copies some source into the container as file
-    fn with_copy_to(self, target: impl Into<String>, source: CopyDataSource)
-        -> ContainerRequest<I>;
+    fn with_copy_to(
+        self,
+        target: impl Into<String>,
+        source: impl Into<CopyDataSource>,
+    ) -> ContainerRequest<I>;
 
     /// Adds a port mapping to the container, mapping the host port to the container's internal port.
     ///
@@ -90,6 +93,7 @@ pub trait ImageExt<I: Image> {
     /// cgroup namespace mode for the container. Possible values are:
     /// - [`CgroupnsMode::Private`]: the container runs in its own private cgroup namespace
     /// - [`CgroupnsMode::Host`]: use the host system's cgroup namespace
+    ///
     /// If not specified, the daemon default is used, which can either be `\"private\"` or `\"host\"`, depending on daemon version, kernel support and configuration.
     fn with_cgroupns_mode(self, cgroupns_mode: CgroupnsMode) -> ContainerRequest<I>;
 
@@ -179,13 +183,13 @@ impl<RI: Into<ContainerRequest<I>>, I: Image> ImageExt<I> for RI {
     fn with_copy_to(
         self,
         target: impl Into<String>,
-        source: CopyDataSource,
+        source: impl Into<CopyDataSource>,
     ) -> ContainerRequest<I> {
         let mut container_req = self.into();
         let target: String = target.into();
         container_req
             .copy_to_sources
-            .push(CopyToContainer { target, source });
+            .push(CopyToContainer::new(source, target));
         container_req
     }
 
diff --git a/testcontainers/src/runners/async_runner.rs b/testcontainers/src/runners/async_runner.rs
index 13da3067..401aee08 100644
--- a/testcontainers/src/runners/async_runner.rs
+++ b/testcontainers/src/runners/async_runner.rs
@@ -218,7 +218,7 @@ where
 
         for copy_to_source in copy_to_sources {
             client
-                .copy_to_container(&container_id, &copy_to_source)
+                .copy_to_container(&container_id, copy_to_source)
                 .await?;
         }
 
diff --git a/testcontainers/tests/async_runner.rs b/testcontainers/tests/async_runner.rs
index 00b1dd60..8033438a 100644
--- a/testcontainers/tests/async_runner.rs
+++ b/testcontainers/tests/async_runner.rs
@@ -8,7 +8,7 @@ use testcontainers::{
         CmdWaitFor, ExecCommand, WaitFor,
     },
     runners::AsyncRunner,
-    CopyDataSource, GenericImage, Image, ImageExt,
+    GenericImage, Image, ImageExt,
 };
 use tokio::io::AsyncReadExt;
 
@@ -204,10 +204,7 @@ async fn async_run_with_log_consumer() -> anyhow::Result<()> {
 async fn async_copy_files_to_container() -> anyhow::Result<()> {
     let container = GenericImage::new("alpine", "latest")
         .with_wait_for(WaitFor::seconds(2))
-        .with_copy_to(
-            "/tmp/somefile",
-            CopyDataSource::from("foobar".to_string().into_bytes()),
-        )
+        .with_copy_to("/tmp/somefile", "foobar".to_string().into_bytes())
         .with_cmd(vec!["cat", "/tmp/somefile"])
         .start()
         .await?;
diff --git a/testcontainers/tests/sync_runner.rs b/testcontainers/tests/sync_runner.rs
index 791a6787..709f6f90 100644
--- a/testcontainers/tests/sync_runner.rs
+++ b/testcontainers/tests/sync_runner.rs
@@ -230,10 +230,7 @@ fn sync_copy_files_to_container() -> anyhow::Result<()> {
 
     let container = GenericImage::new("alpine", "latest")
         .with_wait_for(WaitFor::seconds(2))
-        .with_copy_to(
-            "/tmp/somefile",
-            CopyDataSource::Data("foobar".to_string().into_bytes()),
-        )
+        .with_copy_to("/tmp/somefile", "foobar".to_string().into_bytes())
         .with_cmd(vec!["cat", "/tmp/somefile"])
         .start()?;