Does not start on freshly installed Ubuntu Server (General error: 5 database is locked)

[BorisBrock]

I just set up a Ubuntu Server with docker. Then I added Heimdall via Portainer:

version: "2.1"
services:
  heimdall:
    image: linuxserver/heimdall
    container_name: heimdall
    volumes:
      - /media/docker/heimdall:/config
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=Europe/London
    ports:
      - 80:80
      - 443:443
    restart: unless-stopped

But the container does not start up, and the web interface is not reachable. Here's what the container's log says:

[migrations] started
[migrations] 01-nginx-site-confs-default: skipped
[migrations] 02-default-location: skipped
[migrations] done
───────────────────────────────────────
██╗ ███████╗██╗ ██████╗
██║ ██╔════╝██║██╔═══██╗
██║ ███████╗██║██║ ██║
██║ ╚════██║██║██║ ██║
███████╗███████║██║╚██████╔╝
╚══════╝╚══════╝╚═╝ ╚═════╝
Brought to you by linuxserver.io
───────────────────────────────────────
To support LSIO projects visit:
https://www.linuxserver.io/donate/
───────────────────────────────────────
GID/UID
───────────────────────────────────────
User UID: 1000
User GID: 1000
───────────────────────────────────────
using keys found in /config/keys
New container detected, installing Heimdall
[custom-init] No custom files found, skipping...
[ls.io-init] done.
Illuminate\Database\QueryException
SQLSTATE[HY000]: General error: 5 database is locked (Connection: sqlite, SQL: create table "migrations" ("id" integer primary key autoincrement not null, "migration" varchar not null, "batch" integer not null))
at /app/www/vendor/laravel/framework/src/Illuminate/Database/Connection.php:829
825▕ $this->getName(), $query, $this->prepareBindings($bindings), $e
826▕ );
827▕ }
828▕
➜ 829▕ throw new QueryException(
830▕ $this->getName(), $query, $this->prepareBindings($bindings), $e
831▕ );
832▕ }
833▕ }
1 [internal]:0
Illuminate\Foundation\Application::Illuminate\Foundation{closure}()
+41 vendor frames
43 /app/www/app/Providers/AppServiceProvider.php:148
Illuminate\Support\Facades\Facade::__callStatic()

The SQL error then repeats indefinitely. Is there a cure for this?

[825i]

It's likely a problem with how you are mounting your drives. Use SMB2.