argo-cd/docs/user-guide/environment-variables.md

Environment Variables

The following environment variables can be used with argocd CLI:

Environment Variable	Description
ARGOCD_SERVER	the address of the Argo CD server without https:// prefix (instead of specifying --server for every command) eg. ARGOCD_SERVER=argocd.mycompany.com if served through an ingress with DNS
ARGOCD_AUTH_TOKEN	the Argo CD apiKey for your Argo CD user to be able to authenticate
ARGOCD_OPTS	command-line options to pass to argocd CLI eg. ARGOCD_OPTS="--grpc-web"