For those asking, here are my Docker Compose files for Piper (text-to-speech), Whisper (speech-to-text), and OpenWakeWord (allows the use of a wake word with things like the Atom Echo)

Piper

version: '3.3'
services:
  wyoming-piper:
    container_name: wyoming-piper
    image: 'rhasspy/wyoming-piper'
    ports:
      - "10200:10200"
    volumes:
      - '/docker/containers/wyoming-piper/data:/data'
    command: [ "--voice", "en_US-danny-low" ]
    restart: always

Note: The voice can be changed depending on your preference. Listen to the possible options here.

Whisper

version: '3.3'
services:
  wyoming-whisper:
    container_name: wyoming-whisper
    image: 'rhasspy/wyoming-whisper'
    ports:
      - "10300:10300"
    volumes:
      - '/docker/containers/wyoming-whisper/data:/data'
    command: [ "--model", "base", "--language", "en" ]
    restart: always

Note: The model can be changed depending on the power of your system. See possible options here.

OpenWakeWord

version: '3.3'
services:
  wyoming-openwakeword:
    container_name: wyoming-openwakeword
    image: 'rhasspy/wyoming-openwakeword'
    ports:
      - "10400:10400"
    volumes:
      - '/docker/containers/wyoming-openwakeword/data:/data'
      - '/docker/containers/wyoming-openwakeword/custom:/custom'
    command: --preload-model 'ok_nabu' --custom-model-dir /custom
    restart: always

Note: Even though the model for the wake command is set in the Compose file, this can easily be changed in your HA Assist settings.

After they are up and running, you can just manually add the Integrations to HA which will create the Wyoming Protocol Integration. Then go back to your Assist settings and they should be available in the relevant dropdowns.

I hope this helps