Update adminer and remove Dockerfile

docker-compose.yml

@@ -16,9 +16,7 @@ services:
 
 
   adminer:
-    build:
-      context: ./src
-      dockerfile: Dockerfile
+    image: adminer:4.7.6
     restart: always
     ports:
       - 8085:8080

src/Dockerfile

-from adminer:4.7.1
-RUN sed -i "s/auth_error(lang(83,ceil(\$df\/60)));/{}/g" /var/www/html/adminer.php