Correções de implantação

.env.example

@@ -1,7 +1,8 @@
-DB_HOST=localhost
+DB_HOST=db
 DB_NAME=dnsblock
 DB_USER=root
 DB_PASS=
+DB_ROOT_PASSWORD=
 DB_PORT=3306
 
 APP_URL=http://localhost:8000

docker-compose.yml

@@ -26,10 +26,10 @@ services:
     container_name: dnsblock-db
     restart: unless-stopped
     environment:
-      MYSQL_DATABASE: dnsblock
-      MYSQL_ROOT_PASSWORD: rootpassword
-      MYSQL_PASSWORD: password
-      MYSQL_USER: user
+      MYSQL_DATABASE: ${DB_NAME}
+      MYSQL_ROOT_PASSWORD: ${DB_ROOT_PASSWORD}
+      MYSQL_PASSWORD: ${DB_PASS}
+      MYSQL_USER: ${DB_USER}
     volumes:
       - dbdata:/var/lib/mysql
       - /etc/localtime:/etc/localtime:ro