ci: way too much overhead to create a job

Just run configure and make in the same job

.gitlab-ci.yml

@@ -1,24 +1,18 @@
 image: gcc
 
 stages:
-  - configure
   - build
 
 before_script:
   - apt-get update
-  - apt-get -y install cmake
+  - apt-get -y install cmake ninja-build
   - apt-get -y install libxcb-render0-dev libxcb-randr0-dev libxcb-util0-dev libxcb-cursor-dev libcairo2-dev libyaml-dev
   - apt-get -y install libudev-dev libjson-c-dev libmpdclient-dev libasound2-dev libxcb-xkb-dev
 
-configure:
-  stage: configure
-  script:
-    - mkdir -p bld/debug
-    - cd bld/debug
-    - cmake -DCMAKE_BUILD_TYPE=Debug ../../
-
 build:
   stage: build
   script:
+    - mkdir -p bld/debug
     - cd bld/debug
-    - make
+    - cmake -G Ninja -DCMAKE_BUILD_TYPE=Debug ../../
+    - ninja