remove DATA_ROOT and update PROJECT_ROOT

default-environment.env

@@ -1,4 +1,4 @@
-PROJECT_ROOT=/home/nixos/docker
+PROJECT_ROOT=/mnt/docker
 DOMAIN=lan.ddnsgeek.com
 TZ=Australia/Brisbane
 EMAIL=wayne.bennett@live.com
@@ -6,11 +6,9 @@ SECRETS_ENV_FILE=${PROJECT_ROOT}/secrets/stack-secrets.env
 
 # Data locations
 
-DATA_ROOT=/mnt/docker
-
-DOCKER_VOLUMES=${DATA_ROOT}/volumes
-DOCKER_DATABASES=${DATA_ROOT}/databases
-DOCKER_CONFIG=${DATA_ROOT}/config
+DOCKER_VOLUMES=${PROJECT_ROOT}/volumes
+DOCKER_DATABASES=${PROJECT_ROOT}/databases
+DOCKER_CONFIG=${PROJECT_ROOT}/config
 
 # Core
 CROWDSEC_COLLECTIONS=crowdsecurity/traefik