Replace PONOS_DATA_DIR with the existing PONOS_DATA

arkindex_worker/worker/base.py

@@ -145,7 +145,7 @@ class BaseWorker(object):
             merge_parents_cache(
                 task["parents"],
                 self.cache_path,
-                data_dir=os.environ.get("PONOS_DATA_DIR", "/data"),
+                data_dir=os.environ.get("PONOS_DATA", "/data"),
                 chunk=os.environ.get("ARKINDEX_TASK_CHUNK"),
             )
 

tests/test_merge.py

@@ -151,7 +151,7 @@ def test_merge_from_worker(
     assert CachedTranscription.select().count() == 0
 
     # Configure worker with a specific data directory
-    monkeypatch.setenv("PONOS_DATA_DIR", str(tmpdir))
+    monkeypatch.setenv("PONOS_DATA", str(tmpdir))
     mock_base_worker_with_cache.configure()
 
     # Then we have 2 elements and a transcription