Maybe with ENV vars?

Dockerfile

@@ -8,6 +8,8 @@ ARG MONGO_VERSION=${MONGO_VERSION:-latest}
 ## mongo build stage
 FROM mongo:$MONGO_VERSION AS database
 ENV NODE_ENV $ENV
+ENV MONGO_ENTRY_FILE $MONGO_ENTRY_FILE
+ENV MONGO_VERSION $MONGO_VERSION
 COPY docker-entrypoint-initdb.d/mongo-init-$MONGO_ENTRY_FILE.sh ./docker-entrypoint-initdb.d/mongo-init.sh
 
 ## stage one, build the service

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@mifi/auth-service",
-  "version": "1.0.9",
+  "version": "1.0.10",
   "author": "mifi (Mike Fitzpatrick)",
   "license": "MIT",
   "scripts": {