updated dockerfile.py

Signed-off-by: Varsha U N <varshamaddur2006@gmail.com>

Author: VarshaUN

src/packagedcode/dockerfile.py

@@ -23,10 +23,11 @@ class DockerfileHandler(models.DatafileHandler):
     @classmethod 
     def is_datafile(cls, path): 
         patterns = ['Dockerfile', 'containerfile', '*.dockerfile'] 
+        filename=os.path.basename(path)
         for pattern in patterns: 
-            if fnmatch.fnmatch(path, pattern): 
+            if fnmatch.fnmatch(filename, pattern): 
                 return True 
-            return False
+        return False
 
     @classmethod
     def parse(cls, location, package_only=False):
@@ -48,10 +49,11 @@ def parse(cls, location, package_only=False):
     @classmethod
     def extract_oci_labels_from_dockerfile(cls, dockerfile_path):
         """
-        Extract OCI labels from the Dockerfile using container-inspector.
+        Extract OCI labels from the Dockerfile using DockerfileParser.
         """
         labels = {}
         parser = DockerfileParser()
-        parser.parse(dockerfile_path)
-        labels = parser.labels
+        with open(dockerfile_path, 'r') as dockerfile:
+          parser.content = dockerfile.read() 
+          labels = parser.labels
         return labels