abandon to use secret, it has too many consequences

+ use classical env technic, but it might not be safe

srcs/docker-compose.yml

@@ -9,12 +9,12 @@ version: "3.8"
 
 services:
 # ---------------------------------
-  test:
-    build:
-      context: ./requirements/test
-      dockerfile: Dockerfile
-    image: test
-    container_name: mytest
+#  test:
+#    build:
+#      context: ./requirements/test
+#      dockerfile: Dockerfile
+#    image: test
+#    container_name: mytest
 # ---------------------------------
   nginx:
     #restart: on-failure
@@ -29,16 +29,13 @@ services:
 # ---------------------------------
   mariadb:
     #restart: on-failure
+    env_file: .env
     build:
       context: ./requirements/mariadb
-      dockerfile: Dockerfile
+      args:
+        - DB_NAME=${DB_NAME}
+        - DB_USER=${DB_USER}
+        - DB_PSWD=${DB_PSWD}
     image: mariadb
     container_name: mymariadb
-    #--secret id=mysecret,src=mysecret.txt
-    secrets:
-      - my_secret
-
-secrets:
-  my_secret:
-    file: ./secret.txt