Handle multiple image IDs in the image-ids.txt file.

Docker Desktop 4.30.0 uses the containerd image store by default, which
generates different IDs for the images, and as a result breaks the logic
we are using when verifying the images IDs are present.

Now, multiple IDs can be stored in the `image-id.txt` file.

Fixes #933

dangerzone/isolation_provider/container.py

@@ -194,7 +194,7 @@ def is_container_installed() -> bool:
  """
  # Get the image id
  with open(get_resource_path("image-id.txt")) as f:
- expected_image_id = f.read().strip()
+ expected_image_ids = f.read().strip().split()
 
  # See if this image is already installed
  installed = False
@@ -212,7 +212,7 @@ def is_container_installed() -> bool:
  )
  found_image_id = found_image_id.strip()
 
- if found_image_id == expected_image_id:
+ if found_image_id in expected_image_ids:
  installed = True
  elif found_image_id == "":
  pass