From d9f66f069c20afd8edc90011935f215bb4ec0aad Mon Sep 17 00:00:00 2001
From: ldericher <40151420+ldericher@users.noreply.github.com>
Date: Thu, 2 Dec 2021 02:48:41 +0100
Subject: [PATCH] Service.has_executable

---
 kiwi_scp/instance.py | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/kiwi_scp/instance.py b/kiwi_scp/instance.py
index 3d47c87..8cf1f80 100644
--- a/kiwi_scp/instance.py
+++ b/kiwi_scp/instance.py
@@ -33,6 +33,19 @@ class Service:
             if cd_match:
                 yield Path(cd_match.group(1))
 
+    def has_executable(self, exe_name: str) -> bool:
+        try:
+            # test if desired executable exists
+            COMPOSE_EXE.run(
+                ["exec", "-T", self.name, "/bin/sh", "-c", f"command -v {exe_name}"],
+                check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL,
+                **self.parent.process_kwargs,
+            )
+            return True
+
+        except subprocess.CalledProcessError:
+            return False
+
 
 @attr.s
 class Services: