Download agent logs using sas url (#1920)

.devcontainer/post-create-script.sh

@@ -27,7 +27,8 @@ echo "Restore dotnet dependencies"
 cd /workspaces/onefuzz/src/ApiService
 dotnet restore
 
-sudo apt-get install direnv
+sudo apt-get install direnv uuid-runtime
+pip install wheel
 
 echo "Setting up venv"
 cd /workspaces/onefuzz/src
@@ -53,3 +54,7 @@ direnv allow
 pip install -r requirements-dev.txt
 cd __app__
 pip install -r requirements.txt
+
+cd /workspaces/onefuzz/src/utils
+chmod u+x lint.sh
+pip install types-six

src/cli/onefuzz/debug.py

@@ -635,6 +635,7 @@ def get(
         """
 
         from typing import cast
+        from urllib import parse
 
         if job_id is None:
             if task_id is None:
@@ -658,10 +659,11 @@ def get(
             if machine_id is not None:
                 file_path += f"{machine_id}/"
 
-        token_credential = AzureCliCredential()
+        container_name = parse.urlsplit(container_url).path[1:]
+        container = self.onefuzz.containers.get(container_name)
 
         container_client: ContainerClient = ContainerClient.from_container_url(
-            container_url, credential=token_credential
+            container.sas_url
         )
 
         blobs = container_client.list_blobs(name_starts_with=file_path)
@@ -683,7 +685,12 @@ def __init__(self, name: str, creation_time: datetime):
 
         files.sort(key=lambda x: x.creation_time, reverse=True)
 
-        self.logger.info(f"Found {len(files)} matching files to download")
+        num_files = len(files)
+        if num_files > 0:
+            self.logger.info(f"Found {len(files)} matching files to download")
+        else:
+            self.logger.info("Did not find any matching files to download")
+            return None
 
         if not all:
             self.logger.info(f"Downloading only the {last} most recent files")