Update Dockerfile

Dockerfile

@@ -54,20 +54,26 @@ RUN python3 -m pip install --break-system-packages --no-cache-dir "pycdlib==${VE
 
 RUN python3 - <<'PY'
 from pathlib import Path
-import pycdlib
 
-path = Path(pycdlib.__file__).with_name("pycdlib.py")
+import pycdlib.pycdlib
+
+path = Path(pycdlib.pycdlib.__file__)
 text = path.read_text()
 
 old = """\
+        # The remove_child() method returns True if the parent no longer needs
+        # the extent that the directory record for this child was on.
         if child.parent.remove_child(child, index, self.logical_block_size):
+            return self.logical_block_size
 """
 
 new = """\
+        # The remove_child() method returns True if the parent no longer needs
+        # the extent that the directory record for this child was on.
         if (
-                index < 0
-                or index >= len(child.parent.children)
-                or child.parent.children[index] is not child
+            index < 0
+            or index >= len(child.parent.children)
+            or child.parent.children[index] is not child
         ):
             for actual_index, candidate in enumerate(child.parent.children):
                 if candidate is child:
@@ -79,18 +85,20 @@ new = """\
                 )
 
         if child.parent.remove_child(child, index, self.logical_block_size):
+            return self.logical_block_size
 """
 
-matches = text.count(old)
+count = text.count(old)
 
-if matches != 1:
+if count != 1:
     raise SystemExit(
-        f"Expected exactly one PyCdlib source block, found {matches} in {path}"
+        f"Expected exactly one PyCdlib source block, found {count} in {path}"
     )
 
 path.write_text(text.replace(old, new, 1))
 
-print(f"Patched {path}")
+compile(path.read_text(), str(path), "exec")
+print(f"Patched PyCdlib: {path}")
 PY
 
 ARG VERSION_ARG="0.00"