change default cookie path to /bitcoin/.cookie

backend/src/__tests__/config.test.ts

@@ -56,7 +56,7 @@ describe('Mempool Backend Config', () => {
         PASSWORD: 'mempool',
         TIMEOUT: 60000,
         COOKIE: false,
-        COOKIE_PATH: ''
+        COOKIE_PATH: '/bitcoin/.cookie'
       });
 
       expect(config.SECOND_CORE_RPC).toStrictEqual({
@@ -66,7 +66,7 @@ describe('Mempool Backend Config', () => {
         PASSWORD: 'mempool',
         TIMEOUT: 60000,
         COOKIE: false,
-        COOKIE_PATH: ''
+        COOKIE_PATH: '/bitcoin/.cookie'
       });
 
       expect(config.DATABASE).toStrictEqual({