You should have setup the google calendar integration.
In your ui-lovelace.yaml
resources:
- url: /local/dist/google-calendar-card.js
type: module
- url: https://use.fontawesome.com/releases/v5.2.0/css/all.css
type: css
...
- type: "custom:google-calendar-card"
entities:
- calendar.ronald_dehuysser
- calendar.contacts
Using docker-compose and sed change the 'maxResults': 5
in /homeassistant/components/calendar/google.py
to a number of your liking.