Varnish will use the following environment variables. You can override them if you want
| Environment Variable | Type | Default Value |
|---|---|---|
| VARNISH_BACKEND_HOST | String | 127.0.0.1 |
| VARNISH_BACKEND_PORT | String | 80 |
| VARNISH_SECRET | String | secret |
| VARNISH_MEMORY_SIZE | String | 256M |
| VARNISH_STORAGE_SIZE | String | 1024M |