diff --git a/update.py b/update.py
index b2e2d2b..cae387c 100755
--- a/update.py
+++ b/update.py
@@ -3,6 +3,7 @@
 from pathlib import Path
 from subprocess import call
 from datetime import datetime
+from typing import List
 
 
 def main():
@@ -11,27 +12,31 @@ def main():
 
 
 def build_images():
-    images_str = Path('images.conf').read_text()
-    images = images_str.split('\n')
+    images = read_file(Path('images.conf'))
     today = datetime.now().strftime('%Y%m%d')
     for image in images:
-        path = Path('../images').joinpath(image)
-
+        path = Path(f'../images/{image}')
         call(['docker', 'build', '--no-cache', f'--tag={image}-panthera:{today}', '.'],
                cwd=path)
 
 
 def update_containers():
-    containers_str = Path('container.conf').read_text()
-    containers = containers_str.split('\n')
+    containers = read_file(Path('container.conf'))
     for container in containers:
-        path = Path('../container').joinpath(container)
+        path = Path(f'../container/{container}')
         call(['docker-compose', 'pull'],
                cwd=path)
         call(['docker-compose', 'up', '-d'],
                cwd=path)
 
 
+def read_file(path: Path) -> List[str]:
+    content = path.read_text().strip()
+    elements = content.split('\n')
+    elements = [item for item in elements if not item.startswith('#')]
+    return elements
+
+
 if __name__ == "__main__":
     main()