Update used docker image to generate package

.gitlab-ci.yml

@@ -10,6 +10,7 @@ variables:
     TAG: "testing"                                                                                      # Conan tag
     VERSION: "2.2.4"                                                                                    # Version to build
     RELEASE_TYPE: "Release"                                                                             # default release type
+    DOCKER_IMAGE: "${CI_REGISTRY}/olena/pylene/build-toolset"
 
 stages:
     - build
@@ -17,7 +18,7 @@ stages:
 
 .job-basic-build-linux: &distcheck-basic-build-linux
     stage: build
-    image: mroynard/ubuntu-toolset:stable
+    image: ${DOCKER_IMAGE}
     script:
         - set -e
         - conan create
@@ -81,7 +82,7 @@ distcheck-build-linux-clang7-release:
 
 distcheck-package-linux-bintray:
     stage: package
-    image: mroynard/ubuntu-toolset:stable
+    image: ${DOCKER_IMAGE}
     script:
         - set -e
         - conan remote add $CONAN_BINTRAY_REMOTE_NAME $CONAN_BINTRAY_REMOTE_URL
@@ -101,7 +102,7 @@ distcheck-package-linux-bintray:
 
 distcheck-package-linux-lrde:
     stage: package
-    image: mroynard/ubuntu-toolset:stable
+    image: ${DOCKER_IMAGE}
     script:
         - set -e
         - conan remote add $CONAN_LRDE_REMOTE_NAME $CONAN_LRDE_REMOTE_URL