Remove docker testing from makefile

.travis.yml

@@ -17,13 +17,8 @@ env:
     - V=1
 before_script:
   - make bootstrap
-jobs:
-  include:
-    - stage: lint
-      script: make lint
-    - script:
-        - make test
-        - make build
+script:
+  - make
   - make artifacts
 after_success:
   - bash <(curl -s https://codecov.io/bash) -t "$CODECOV_TOKEN" || echo "Codecov did

make/docker.mk

@@ -57,8 +57,7 @@ define DOCKER_BUILDX
 endef
 
 # For non-master builds don't build the docker containers.
-docker-branch: docker-prepare
-	$(call DOCKER_BUILDX,$(VERSION),)
+docker-branch:
 
 # For master builds don't build the docker containers.
 docker-master: