Login and credentials

The default login is user mtl with password change-me. Change it before other people or the internet can reach MTL Explorer.

Your login is set in a file called .env, next to docker-compose.yml:

mtl-explorer/
├── docker-compose.yml
├── .env                 create this file here
└── data/

Create it on the machine that runs Docker, not inside the container or data/.

Create the file and allow only your user to read it.

On macOS or Linux:

touch .env
chmod 600 .env

On Windows PowerShell:

if (-not (Test-Path .env)) { New-Item -ItemType File -Path .env }

Add your login:

MTL_USER_LOGIN=your-user
MTL_USER_PASSWORD=change-this-password

Apply it:
```
docker compose up -d
```

Do not share or commit .env. To keep it somewhere else, pass it on every start and update:

docker compose --env-file "/path/to/mtl.env" up -d

MTL Explorer serves plain HTTP on port 18080. For HTTPS, put a reverse proxy in front of it.

On this page

Settings → Session shows a login reference (ClientLoginRef). If you report a problem, include it so the matching log entries can be found. It is not a password and cannot be used to sign in.

Login reference