Get searc backend password from env var SEARCH_BACKEND_PASSWORD

docker-compose.yml

@@ -22,6 +22,7 @@ services:
             - USE_COLOR=True
             - SHOW_PROGRESS=False
             - SEARCH_BACKEND_HOST_NAME=sonic
+            - SEARCH_BACKEND_PASSWORD=SecretPassword
         volumes:
             - ./data:/data
         depends_on:
@@ -30,6 +31,8 @@ services:
         image: valeriansaliou/sonic:v1.3.0    
         ports:
             - 1491:1491
+        environment:
+            - SEARCH_BACKEND_PASSWORD=SecretPassword
         volumes:
             - ./etc/sonic/config.cfg:/etc/sonic.cfg
             - ./data:/var/lib/sonic/store/

etc/sonic/config.cfg

@@ -14,7 +14,7 @@ log_level = "debug"
 inet = "0.0.0.0:1491"
 tcp_timeout = 300
 
-auth_password = "SecretPassword"
+auth_password = "${env.SEARCH_BACKEND_PASSWORD}"
 
 [channel.search]