Fix backend database connectivity in compose.yml by renaming to spring.mongodb.uri, adding credentials, and introducing healthcheck

compose.yml

@@ -4,8 +4,17 @@ services:
     container_name: lmnp-mongodb
     ports:
       - "27017:27017"
+    environment:
+      MONGO_INITDB_ROOT_USERNAME: admin
+      MONGO_INITDB_ROOT_PASSWORD: adminpassword
     volumes:
       - mongodb_data:/data/db
+    healthcheck:
+      test: ["CMD", "mongosh", "--username", "admin", "--password", "adminpassword", "--eval", "db.adminCommand('ping')"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
+#      - ./mongo-init.js:/docker-entrypoint-initdb.d/mongo-init.js:ro
 
   backend:
     build:
@@ -15,10 +24,11 @@ services:
     ports:
       - "8080:8080"
     environment:
-      MONGODB_URI: mongodb://mongodb:27017/lmnp
+      SPRING_DATA_MONGODB_URI: mongodb://admin:adminpassword@mongodb:27017/lmnp?authSource=admin
       OIDC_ISSUER_URI: ${OIDC_ISSUER_URI:-http://localhost:8090/realms/voidAuth}
     depends_on:
-      - mongodb
+      mongodb:
+        condition: service_healthy
 
   frontend:
     build:
@@ -35,3 +45,7 @@ services:
 
 volumes:
   mongodb_data:
+
+networks:
+  default:
+    name: lmnp-net