Merge branch '1.0.0impish' into '1.0.0'

Add Ubuntu impish

See merge request !8

.gitlab-ci.yml

@@ -104,6 +104,23 @@ upload/debian/stretch:
 ###################################
 # Ubuntu
 ###################################
+build/ubuntu/impish:
+  <<: *build
+  variables:
+    DOCKER_IMAGE: ubuntu/impish
+
+test/ubuntu/impish:
+  <<: *test
+  variables:
+    DOCKER_IMAGE: ubuntu/impish
+  dependencies:
+  - build/ubuntu/impish
+
+upload/ubuntu/impish:
+  <<: *upload
+  dependencies:
+  - build/ubuntu/impish
+
 build/ubuntu/focal:
   <<: *build
   variables: