add ssh key to agent

start.py

@@ -96,8 +96,18 @@ def setup(self, _=None):
             )
             return
         self.store_the_keys(*keys)
+
+        # Add the key to the ssh-agent.
+        self.add_key_to_ssh_agent()
+
         self.output.value = "The keys were updated 👍"
 
+    def add_key_to_ssh_agent(self):
+        """Add the key to the ssh-agent."""
+        subprocess.run(
+            ["ssh-add", "-t", "1d", str(self.private_key_file)], encoding="utf-8", check=True,
+        )
+
     def get_keys(self):
         headers = {"Content-Type": "application/json", "Accept": "application/json"}