Getting this error

docker-compose.yml:1

1 | >>> version: '3.8'

2 |

3 | services:

ERROR: failed to run Build function: dockerfile parse error on line 1: unknown instruction: version:

this is the docker-compose.yml file

version: '3.8'

services:
backend:
build: ./backend
ports:
- "3000:3000"
environment:
- NODE_ENV=production
restart: unless-stopped

frontend:
build: ./frontend
ports:
- "80:80"
dependson: - backend environment: - VITEBACKENDAPIURL=http://localhost:3000
restart: unless-stopped

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