Correctly strip newlines from output

src/compose.rs

@@ -37,7 +37,11 @@ impl ComposeProject {
             .output()
             .expect("Failed to get images");
         let stdout = String::from_utf8(output.stdout).expect("Failed to parse output");
-        stdout.trim().split('\n').map(String::from).collect()
+        stdout
+            .split('\n')
+            .map(String::from)
+            .filter(|s| !s.is_empty())
+            .collect()
     }
 
     pub fn down(&self) -> bool {