Gitlab CI: try two

.gitlab-ci.yml

@@ -1,9 +1,10 @@
 before_script:
-  - echo "yes" | sudo add-apt-repository ppa:kalakris/cmake
-  - echo "yes" | sudo add-apt-repository ppa:boost-latest/ppa
-  - echo "yes" | sudo add-apt-repository ppa:ubuntu-toolchain-r/test
-  - echo "yes" | sudo add-apt-repository 'deb http://llvm.org/apt/precise/ llvm-toolchain-precise-3.5 main'
-  - wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key | sudo apt-key add -
+  - git checkout -b master
+  - echo "yes" | add-apt-repository ppa:kalakris/cmake
+  - echo "yes" | add-apt-repository ppa:boost-latest/ppa
+  - echo "yes" | add-apt-repository ppa:ubuntu-toolchain-r/test
+  - echo "yes" | add-apt-repository 'deb http://llvm.org/apt/precise/ llvm-toolchain-precise-3.5 main'
+  - wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key | apt-key add -
   - apt-get -yqq update
   - apt-get -yqq install build-essential libtool gcc-4.8 g++-4.8 make cmake openssl clang-3.5
   - apt-get -yqq install libssl-dev libmysqlclient-dev libmysql++-dev libreadline6-dev zlib1g-dev libbz2-dev libzmq3-dev
@@ -17,7 +18,7 @@ install:
     - cd bin
     - cmake ../ -DWITH_WARNINGS=1 -DWITH_COREDEBUG=0 -DUSE_COREPCH=1 -DUSE_SCRIPTPCH=1 -DTOOLS=1 -DSCRIPTS=1 -DSERVERS=1 -DNOJEM=1 -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_FLAGS="-Werror" -DCMAKE_CXX_FLAGS="-Werror"
     - cd ..
-    - sudo chmod +x contrib/check_updates.sh
+    - chmod +x contrib/check_updates.sh
     - $CXX --version
     - mysql -uroot < sql/create/create_mysql.sql
     - mysql -utrinity -ptrinity auth < sql/base/auth_database.sql