# Docker

Docker is not the only containerisation technology and not necessarily the best, but it is currently widely used. Docker Compose is a system that uses configuration files that the `docker compose up -d` command reads and uses.

My user had to run Docker commands with `sudo`. It's possible this was giving permission issues so `sudo usermod -aG docker $USER` was used and means `sudo` is not needed for running docker compose commands.

- `sudo docker compose up --build`
- When running, `d` detaches it from the terminal
- `sudo docker compose down`

## Updates

You can get the latest images and run them. The compose file might have a version limitation identified so that needs changing first. Navigate to the app folder with the compose file in:

```bash
sudo docker compose pull
sudo docker compose up -d
```

## Volumes

[How to find the Postgres Docker volume](https://docs.docker.com/get-started/docker-concepts/running-containers/persisting-container-data/)

- `docker volume ls` - list all volumes
- `docker volume rm <volume-name-or-id>` - remove a volume (only works when the volume is not attached to any containers)
- `docker volume prune` - remove all unused (unattached) volumes
- `sudo docker volume prune -a`

## Other

```docker
docker ps
docker logs immich_machine_learning
```