diff --git a/dangerzone/container_utils.py b/dangerzone/container_utils.py
index 74b252d..7c8f06d 100644
--- a/dangerzone/container_utils.py
+++ b/dangerzone/container_utils.py
@@ -56,6 +56,11 @@ class Runtime(object):
         return "podman" if platform.system() == "Linux" else "docker"
 
 
+def subprocess_run(*args, **kwargs) -> subprocess.CompletedProcess:
+    """subprocess.run with the correct startupinfo for Windows."""
+    return subprocess.run(*args, startupinfo=get_subprocess_startupinfo(), **kwargs)
+
+
 def get_runtime_version(runtime: Optional[Runtime] = None) -> Tuple[int, int]:
     """Get the major/minor parts of the Docker/Podman version.
 
@@ -75,9 +80,8 @@ def get_runtime_version(runtime: Optional[Runtime] = None) -> Tuple[int, int]:
 
     cmd = [str(runtime.path), "version", "-f", query]
     try:
-        version = subprocess.run(
+        version = subprocess_run(
             cmd,
-            startupinfo=get_subprocess_startupinfo(),
             capture_output=True,
             check=True,
         ).stdout.decode()
@@ -193,8 +197,6 @@ def load_image_tarball() -> None:
         add_image_tag(bad_tag, good_tag)
         delete_image_tag(bad_tag)
 
-    log.info("Successfully installed container image")
-
 
 def tag_image_by_digest(digest: str, tag: str) -> None:
     """Tag a container image by digest.
@@ -204,7 +206,7 @@ def tag_image_by_digest(digest: str, tag: str) -> None:
     image_id = get_image_id_by_digest(digest)
     cmd = [str(runtime.path), "tag", image_id, tag]
     log.debug(" ".join(cmd))
-    subprocess.run(cmd, startupinfo=get_subprocess_startupinfo(), check=True)
+    subprocess_run(cmd, check=True)
 
 
 def get_image_id_by_digest(digest: str) -> str:
@@ -221,9 +223,7 @@ def get_image_id_by_digest(digest: str) -> str:
         "{{.Id}}",
     ]
     log.debug(" ".join(cmd))
-    process = subprocess.run(
-        cmd, startupinfo=get_subprocess_startupinfo(), check=True, capture_output=True
-    )
+    process = subprocess_run(cmd, check=True, capture_output=True)
     # In case we have multiple lines, we only want the first one.
     return process.stdout.decode().strip().split("\n")[0]
 
@@ -232,10 +232,12 @@ def container_pull(image: str, manifest_digest: str):
     """Pull a container image from a registry."""
     runtime = Runtime()
     cmd = [str(runtime.path), "pull", f"{image}@sha256:{manifest_digest}"]
-    process = subprocess.Popen(cmd, stdout=subprocess.PIPE)
-    process.communicate()
-    if process.returncode != 0:
-        raise errors.ContainerPullException(f"Could not pull the container image: {e}")
+    try:
+        subprocess_run(cmd, check=True)
+    except subprocess.CalledProcessError as e:
+        raise errors.ContainerPullException(
+            f"Could not pull the container image: {e}"
+        ) from e
 
 
 def get_local_image_digest(image: str) -> str:
@@ -249,7 +251,11 @@ def get_local_image_digest(image: str) -> str:
     cmd = [str(runtime.path), "images", image, "--format", "{{.Digest}}"]
     log.debug(" ".join(cmd))
     try:
-        result = subprocess.run(cmd, capture_output=True, check=True)
+        result = subprocess_run(
+            cmd,
+            capture_output=True,
+            check=True,
+        )
         lines = result.stdout.decode().strip().split("\n")
         if len(lines) != 1:
             raise errors.MultipleImagesFoundException(