Add envvar for OscZarr S3 endpoint.

Signed-off-by: Xavier Barrachina Civera <xbarrachina@arfima.com>

src/hazard/sources/osc_zarr.py

@@ -17,6 +17,7 @@
 
 class OscZarr(ReadWriteDataArray):
     __access_key = "OSC_S3_ACCESS_KEY_DEV"
+    __endpoint_url = "OSC_S3_ENDPOINT_DEV"
     __secret_key = "OSC_S3_SECRET_KEY_DEV"
     __token = "OSC_S3_TOKEN_DEV"
 
@@ -42,14 +43,15 @@ def __init__(
             if s3 is None:
                 # zarr_utilities.load_dotenv() # to load environment variables
                 access_key = os.environ.get(self.__access_key, None)
+                endpoint_url = os.environ.get(self.__endpoint_url, None)
                 secret_key = os.environ.get(self.__secret_key, None)
                 token = os.environ.get(self.__token, None)
-                if token:
-                    s3 = s3fs.S3FileSystem(
-                        key=access_key, secret=secret_key, token=token
-                    )
-                else:
-                    s3 = s3fs.S3FileSystem(key=access_key, secret=secret_key)
+                s3 = s3fs.S3FileSystem(
+                    key=access_key,
+                    secret=secret_key,
+                    token=token,
+                    endpoint_url=endpoint_url,
+                )
 
             group_path = str(PurePosixPath(bucket, prefix, "hazard.zarr"))
             store = s3fs.S3Map(root=group_path, s3=s3, check=False)