diff --git a/.github/workflows/build-and-publish-container-image.yaml b/.github/workflows/build-and-publish-container-image.yaml
index 5b6c28e..fa17b74 100644
--- a/.github/workflows/build-and-publish-container-image.yaml
+++ b/.github/workflows/build-and-publish-container-image.yaml
@@ -30,6 +30,7 @@ jobs:
         dockerfile: Dockerfile
     - uses: ricardochaves/python-lint@v1.4.0
       with:
+        args: --max-line-length=120
         use-pylint: false
         use-flake8: false
         use-black: false
diff --git a/src/utils.py b/src/utils.py
index 6213eef..0047d1f 100644
--- a/src/utils.py
+++ b/src/utils.py
@@ -70,36 +70,22 @@ def get_member_id(members: [ProjectMemberEntity], username: str) -> int | None:
 
 
 async def fill_template(client, path: str, logger) -> str:
-    """Takes the path to a template file and returns its content with the
-    replaced ids
-    """
+    """Reads a template file, replaces placeholders with fetched IDs, and returns the updated content."""
     with open(path, 'r') as file:
         config = file.read()
-        placeholders = re.findall(
-            r'{{[ ]*(?:project|registry):[A-z,0-9,.,\-,_]+[ ]*}}', config
-        )
-        logger.info("Found id templates", extra={"placeholders": placeholders})
-        placeholders = [
-            placeholder.replace('{{', '').replace(' ', '').replace('}}', '')
-            for placeholder in placeholders
-        ]
-        replacements = {}
-        for placeholder in placeholders:
-            placeholder_type, placeholder_value = placeholder.split(':')
-            replacement_value = await fetch_id(
-                client, placeholder_type, placeholder_value
-            )
-            # The mustache specification, which the chevron library builds
-            # on top of, does not allow for dots in keys. Instead, keys with
-            # dots are meant to reference nested objects. In order to have
-            # the right objects to reference, nested objects / dictionaries
-            # are created for keys with dots.
-            replacement_last_part = str(replacement_value)
-            replacement_keys = placeholder.split('.')
-            replacement_keys.append(replacement_last_part)
-            insert_into_dict(replacements, replacement_keys)
-        config = chevron.render(config, replacements)
-        return config
+
+    placeholders = re.findall(r'{{\s*(?:project|registry):[\w.\-_]+\s*}}', config)
+    logger.info("Found id templates", extra={"placeholders": placeholders})
+
+    replacements = {}
+    for placeholder in (p.strip(" {}") for p in placeholders):
+        placeholder_type, placeholder_value = placeholder.split(':')
+        replacement_value = await fetch_id(client, placeholder_type, placeholder_value)
+
+        # Create nested dictionary structure for replacements
+        insert_into_dict(replacements, placeholder.split('.') + [str(replacement_value)])
+
+    return chevron.render(config, replacements)
 
 
 async def fetch_id(
@@ -123,7 +109,7 @@ async def fetch_id(
 
 
 def insert_into_dict(d: dict, parts: [str]) -> None:
-    """Takes a dictionary and insert nested objects given as list.
+    """Inserts nested keys and value into a dictionary.
 
     >>> d = {}
     >>> insert_into_dict(d, ["a", "b", 1])
@@ -133,11 +119,7 @@ def insert_into_dict(d: dict, parts: [str]) -> None:
     >>> d
     {"a": {"b": 1, c: "2"}}
     """
-    assert len(parts) >= 2
-    for part in parts[:-2]:
-        if part not in d:
-            d[part] = {}
-        d = d[part]
-    last_key = parts[-2]
-    value = parts[-1]
-    d[last_key] = value
+    *keys, last_key, value = parts
+    for key in keys:
+        d = d.setdefault(key, {})
+    d[last_key] = value
\ No newline at end of file