Fix folder permissions

docker-compose.yml

@@ -1,4 +1,19 @@
 services:
+  storage-init:
+    build:
+      context: ./backend
+    user: "0:0"
+    command:
+      - "sh"
+      - "-c"
+      - >
+        mkdir -p /data/storage/originals /data/storage/derived/previews /data/storage/tmp &&
+        chown -R 10001:10001 /data/storage &&
+        chmod -R u+rwX,g+rwX /data/storage
+    volumes:
+      - ${DCM_DATA_DIR:-./data}/storage:/data/storage
+    restart: "no"
+
   db:
     image: postgres:16-alpine
     environment:
@@ -90,6 +105,8 @@ services:
         condition: service_healthy
       redis:
         condition: service_started
+      storage-init:
+        condition: service_completed_successfully
       typesense:
         condition: service_started
     networks:
@@ -134,6 +151,8 @@ services:
         condition: service_healthy
       redis:
         condition: service_started
+      storage-init:
+        condition: service_completed_successfully
       typesense:
         condition: service_started
     restart: unless-stopped