fix: controller executable build in pipeline

.drone.yml

@@ -1,18 +1,34 @@
 kind: pipeline
 name: default
 
+workspace:
+  path: /drone/src
+
 steps:
 - name: download
   image: plugins/download
   settings:
-    source: http://vmi366681.contaboserver.net:6423/archive/emgauwa-controller-testing/6/controller
+    source: http://vmi366681.contaboserver.net:6423/archive/emgauwa-controller-testing/6/emgauwa-controller-testing.tar.gz
-    destination: controller
+    destination: emgauwa-controller-testing.tar.gz
-- name: test
+
+- name: prepare-controller
   image: serguzim/emgauwa-builder
   pull: always
+  commands:
+    - tar xzf emgauwa-controller-testing.tar.gz
+    - cd emgauwa-controller-testing
+    - mkdir build
+    - cd build
+    - cmake -DWIRING_PI_DEBUG=on ..
+    - make
+  
+- name: test
+  image: serguzim/emgauwa-builder
+  pull: always
+  environment:
+    EMGAUWA_CONTROLLER_EXE: /drone/src/emgauwa-controller-testing/build/controller
   commands:
   - chmod +x controller
-  - export EMGAUWA_CONTROLLER_EXE=/drone/src/controller
   - mkdir build
   - cd build
   - cmake ..