Merge pull request #141 from gbw/docs/env-file-documentation

docs: add example.env and document all environment variables

src/application/services/share_service.rs

@@ -790,6 +790,6 @@ mod tests {
         assert_eq!(share_dto.item_id, "test_file_id");
         assert_eq!(share_dto.item_type, "file");
         assert!(share_dto.has_password);
-        assert!(share_dto.url.starts_with("http://127.0.0.1:8085/s/"));
+        assert!(share_dto.url.starts_with("http://127.0.0.1:8086/s/"));
     }
 }