The Docker installation described in this document is based on the `docker-compose.yml` configuration file, which is also available in the [NocoBase GitHub repository](https://github.com/nocobase/nocobase/tree/main/docker).
</Alert>
## 1. Switch to the directory where you installed it before
You can also switch to the directory where `docker-compose.yml` is located, depending on the situation.
```bash
# SQLite
cd nocobase/docker/app-sqlite
# MySQL
cd nocobase/docker/app-mysql
# PostgreSQL
cd nocobase/docker/app-postgres
```
## 2. Update the image version number
`docker-compose.yml` file, replace the image of the app container with the latest version.