Not how this works

.gitlab-ci.yml

@@ -8,7 +8,7 @@ before_script:
   - ./nginx-build -V
 
 after_script:
-  - export $BUILD_DIR=$CI_PROJECT_DIR/deb-$(lsb_release -r)
+  - export BUILD_DIR=${CI_PROJECT_DIR}/deb-$(lsb_release -r)
   - mkdir $BUILD_DIR
   - mv $CI_PROJECT_DIR/nginx_${NGINX_VERSION}* $BUILD_DIR
   - mv $CI_PROJECT_DIR/nginx-dbgsym_* $BUILD_DIR