fix: pass MongoDB init credentials via env_file, not shell interpolation

docker-compose.yml

@@ -38,16 +38,13 @@ services:
       - internal
     env_file:
       - stack.env
-    environment:
-      - MONGO_INITDB_ROOT_USERNAME=${MONGO_USER}
-      - MONGO_INITDB_ROOT_PASSWORD=${MONGO_PASSWORD}
-      - MONGO_INITDB_DATABASE=mcdi
     command: ["--auth", "--bind_ip_all"]
     healthcheck:
-      test: echo 'db.runCommand("ping").ok' | mongosh localhost:27017 --quiet
-      interval: 30s
-      timeout: 10s
-      retries: 5
+      test: ["CMD", "mongosh", "--quiet", "--eval", "db.adminCommand('ping')"]
+      interval: 10s
+      timeout: 5s
+      retries: 10
+      start_period: 30s
 
 networks:
   caddy_network:

stack.env

@@ -1,8 +1,9 @@
 CACHEBUST=1736003093
 
 # MongoDB
-MONGO_USER=mcdi
-MONGO_PASSWORD=changeme-set-a-strong-password
+MONGO_INITDB_ROOT_USERNAME=mcdi
+MONGO_INITDB_ROOT_PASSWORD=changeme-set-a-strong-password
+MONGO_INITDB_DATABASE=mcdi
 MONGODB_URI=mongodb://mcdi:changeme-set-a-strong-password@mongodb:27017/mcdi?authSource=admin
 
 # JWT