You just use three backticks to start and end a code block, it’s just markdown.
e.g.
version: '3.4'
services:
vaultwarden:
image: vaultwarden/server:latest
restart: always
# environment:
# SIGNUPS_ALLOWED: 'false'
# ADMIN_TOKEN: 'your authentication token'
ports:
- '127.0.0.1:8200:80'
volumes:
- vaultwarden-data:/data/
...
I don’t think they’re saying it failed. They’re saying that it will fail long before the body ever does.