Set default value of password for caliper log db

Author: m-tanabe

caliper/.env

@@ -9,7 +9,7 @@ PREFIX=mdl_
 DB_LOG_HOST=caliper_log_db
 #DB_LOG_DATABASE=caliper_log
 #DB_LOG_USERNAME=caliper_cli
-#DB_LOG_PASSWORD=''
+#DB_LOG_PASSWORD=caliper
 
 APP_NAME=moodle
 

caliper/config/database.php

@@ -49,7 +49,7 @@
             'port' => env('DB_LOG_PORT', '5432'),
             'database' => env('DB_LOG_DATABASE', 'caliper_log'),
             'username' => env('DB_LOG_USERNAME', 'caliper_cli'),
-            'password' => env('DB_LOG_PASSWORD', ''),
+            'password' => env('DB_LOG_PASSWORD', 'caliper'),
             'charset' => 'utf8',
             'schema' => 'public',
             'sslmode' => 'prefer'

docker-compose.yml

@@ -72,7 +72,7 @@ services:
     container_name: caliper_log_db
     environment:
       - POSTGRES_USER=caliper_cli
-      - POSTGRES_PASSWORD=
+      - POSTGRES_PASSWORD=caliper
       - POSTGRES_DB=caliper_log
     ports:
       - "15432:5432"