feat(start): Add --detach flag

This will create a dedicated worktree for the instance.

App listed to be enabled will also benefit from their own worktrees.

The worktree is cleanup when the instance is destroyed.

src/mapping.rs

@@ -81,7 +81,12 @@ impl<'a> Mapping<'a> {
         }
     }
 
-    pub async fn create(&self, id: &str, config: &HazeConfig) -> Result<()> {
+    pub async fn create(
+        &self,
+        id: &str,
+        config: &HazeConfig,
+        source_root: &Utf8Path,
+    ) -> Result<()> {
         if !self.create {
             return Ok(());
         }
@@ -96,6 +101,19 @@ impl<'a> Mapping<'a> {
             MappingType::File => write(source, "").await.into_diagnostic()?,
         }
 
+        // For worktrees, pre-create mountpoints within /var/www/html to prevent docker from creating them as root.
+        if self.target.starts_with("/var/www/html") {
+            let local_target = source_root.join(
+                self.target
+                    .strip_prefix("/var/www/html")
+                    .unwrap_or(&self.target),
+            );
+            match self.mapping_type {
+                MappingType::Folder => create_dir_all(local_target).await.into_diagnostic()?,
+                MappingType::File => write(local_target, "").await.into_diagnostic()?,
+            }
+        }
+
         Ok(())
     }