With links and fixed names...

docker-compose.yml

@@ -22,7 +22,7 @@ services:
             - ROUTE_PREFIX=${ROUTE_PREFIX}
             - LOGIN_ROUTE=${LOGIN_ROUTE}
             - RESET_ROUTE=${RESET_ROUTE}
-            - DB_HOST=${SERVICE_NAME}_${DB_TYPE}
+            - DB_HOST=${CONTAINER_PREFIX}-${SERVICE_NAME}_${DB_TYPE}
             - DB_USER=${DB_USER}
             - DB_PASS=${DB_PASS}
             - DB_NAME=${DB_NAME}
@@ -46,6 +46,8 @@ services:
             - docknet
         restart: unless-stopped
         image: node
+        links:
+            - auth-service_mongo:${CONTAINER_PREFIX}-${SERVICE_NAME}_${DB_TYPE}
         depends_on:
             - auth-service_mongo
 networks:

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@mifi/auth",
-  "version": "0.0.14",
+  "version": "0.0.15",
   "author": "mifi (Mike Fitzpatrick)",
   "license": "MIT",
   "scripts": {