diff --git a/deployment/docker-build/pyaleph.dockerfile b/deployment/docker-build/pyaleph.dockerfile
index 5c8fb65a..07a14998 100644
--- a/deployment/docker-build/pyaleph.dockerfile
+++ b/deployment/docker-build/pyaleph.dockerfile
@@ -58,7 +58,8 @@ RUN pip install -e .
 
 FROM base
 
-RUN useradd -s /bin/bash aleph
+RUN groupadd -g 1000 -o aleph
+RUN useradd -s /bin/bash -u 1000 -g 1000 -o aleph
 
 COPY --from=builder --chown=aleph /opt/venv /opt/venv
 COPY --from=builder --chown=aleph /opt/pyaleph /opt/pyaleph
diff --git a/src/aleph/web/controllers/accounts.py b/src/aleph/web/controllers/accounts.py
index 5f7c129f..bbd16c2c 100644
--- a/src/aleph/web/controllers/accounts.py
+++ b/src/aleph/web/controllers/accounts.py
@@ -4,7 +4,7 @@
 
 from aiohttp import web
 from aleph_message.models import MessageType
-from pydantic import ValidationError
+from pydantic import TypeAdapter, ValidationError
 
 import aleph.toolkit.json as aleph_json
 from aleph.db.accessors.balances import (
@@ -151,13 +151,11 @@ async def get_account_files(request: web.Request) -> web.Response:
         if not file_pins:
             raise web.HTTPNotFound()
 
+        adapter = TypeAdapter(list[GetAccountFilesResponseItem])
         response = GetAccountFilesResponse(
             address=address,
             total_size=total_size,
-            files=[
-                GetAccountFilesResponseItem.model_validate(dict(file_pin))
-                for file_pin in file_pins
-            ],
+            files=adapter.validate_python(file_pins),
             pagination_page=query_params.page,
             pagination_total=nb_files,
             pagination_per_page=query_params.pagination,