Your first stack

A stack is one app described by a compose.yaml – for example Nextcloud with its database. Each stack lives in its own folder: /opt/stacks/<name>/.

Create a stack

1. Click + New stack.
2. Give it a name: lowercase letters, digits, - and _, e.g. miniflux.
3. Paste the compose.yaml – for example from the app’s documentation.
4. Optionally add a .env file with variables.
5. Click Create and start.

Before saving, the file is checked with docker compose config. A broken file is never saved – you see the error instead.

After saving, the panel shows exactly what it changed – usually where app data will be stored (see Automatic volumes).

Example: Miniflux with PostgreSQL

services:
  miniflux:
    image: miniflux/miniflux:latest
    ports:
      - "8090:8080"
    depends_on:
      - db
    environment:
      DATABASE_URL: postgres://miniflux:secret@db/miniflux?sslmode=disable
      RUN_MIGRATIONS: 1
      CREATE_ADMIN: 1
      ADMIN_USERNAME: admin
      ADMIN_PASSWORD: change-me-please
  db:
    image: postgres:17-alpine
    environment:
      POSTGRES_USER: miniflux
      POSTGRES_PASSWORD: secret
      POSTGRES_DB: miniflux
    volumes:
      - db:/var/lib/postgresql/data
volumes:
  db:

The named volume db becomes the folder ./data/db inside the stack – no paths to type.

Buttons

Button	What it does
Start	docker compose up -d
Restart	Restarts the containers
Update	Pulls new images and recreates the containers (with a backup first, if set up)
Stop	Stops the containers, keeps them
Shut down	Stops and removes the containers – the data in ./data stays

Every operation shows its live output and is saved in the History tab.

Ports

Before a stack starts, its published ports are checked. If a port is already used by another container, you see which one and a free port you can use instead.

Deleting a stack

Delete asks you to type the stack’s name, shuts it down and moves its folder to /opt/stacks/.trash/. Nothing is deleted for good – remove the folder from the trash yourself when you are sure.