Fix a few issues with docker compose deploy

Author: mew1033

ctfcli/core/deployment/ssh.py

@@ -26,18 +26,28 @@ def deploy(self, *args, **kwargs) -> DeploymentResult:
 
     def _deploy_compose_stack(self, *args, **kwargs) -> DeploymentResult:
         host_url = urlparse(self.host)
-        target_path = host_url.path or "~/"
+        target_path = str(host_url.path)
+        if target_path == '/':  # Don't put challenges in the root of the filesystem.
+            target_path = ''
+        elif target_path == '//':  # If you really want to, add a second slash as part of your path: ssh://1.1.1.1//
+            target_path = '/'
+        elif target_path.startswith('/~/'):  # Support relative paths by starting your path with /~/
+            target_path = target_path.removeprefix('/~/')
         try:
-            subprocess.run(["ssh", host_url.netloc, f"mkdir -p {target_path}/"], check=True)
+            subprocess.run(["ssh", host_url.netloc, f"mkdir -p '{target_path}/'"], check=True)
             subprocess.run(
                 ["rsync", "-a", "--delete", self.challenge.challenge_directory, f"{host_url.netloc}:{target_path}"],
                 check=True,
             )
+            if not target_path:
+                remote_path = f"{self.challenge.challenge_directory.name}"
+            else:
+                remote_path = f"{target_path}/{self.challenge.challenge_directory.name}"
             subprocess.run(
                 [
                     "ssh",
                     host_url.netloc,
-                    f"cd {target_path}/{self.challenge.challenge_directory.name} && "
+                    f"cd {remote_path} && "
                     "docker compose up -d --build --remove-orphans -y",
                 ],
                 check=True,