chore: update docker-compose files to use environment variables for MongoDB configuration and add health checks for MongoDB service

docker-compose.dev.yml

@@ -21,12 +21,12 @@ services:
       - ./next.config.js:/app/next.config.js
       - /app/node_modules
       - /app/.next
-      - pnpm_store:/app/.pnpm-store
+      - ~/.pnpm-store:/app/.pnpm-store
     environment:
       - NODE_ENV=development
       - MONGO_USER=admin
       - MONGO_PASSWORD=password123
-      - MONGODB_URI=mongodb://admin:password123@mongodb:27017/stripstream?authSource=admin
+      - MONGODB_URI=${MONGODB_URI}
       - PNPM_HOME=/app/.pnpm-store
       - WATCHPACK_POLLING=true
       - NEXTAUTH_SECRET=${NEXTAUTH_SECRET}
@@ -38,8 +38,8 @@ services:
     container_name: stripstream_mongodb
     restart: always
     environment:
-      MONGO_INITDB_ROOT_USERNAME: admin
-      MONGO_INITDB_ROOT_PASSWORD: password123
+      MONGO_INITDB_ROOT_USERNAME: ${MONGO_USER}
+      MONGO_INITDB_ROOT_PASSWORD: ${MONGO_PASSWORD}
       MONGO_INITDB_DATABASE: stripstream
     ports:
       - "27017:27017"
@@ -49,4 +49,3 @@ services:
 
 volumes:
   mongodb_data:
-  pnpm_store: