fix tests

.travis.yml

@@ -9,8 +9,7 @@ before_install:
     - docker run -it -d -e POSTGRES_DB=onlinejudge -e POSTGRES_USER=onlinejudge -e POSTGRES_PASSWORD=onlinejudge -p 127.0.0.1:5433:5432 postgres:10
 install:
     - pip install -r deploy/requirements.txt
-    - cp oj/custom_settings.example.py oj/custom_settings.py
-    - echo "SECRET_KEY=\"`cat /dev/urandom | head -1 | md5sum | head -c 32`\"" >> oj/custom_settings.py
+    - echo `cat /dev/urandom | head -1 | md5sum | head -c 32` > data/config/secret.key
     - sleep 10 && python manage.py migrate
 script:
     - docker ps -a