user dockerhub for image building and travis-ci for testing

.travis.yml

@@ -1,31 +1,4 @@
-# make use of vm's
-sudo: 'required'
+language: go
 
-# have the docker service set up (we'll
-# update it later)
-services:
-  - docker
-
-# prepare the machine before any code
-# installation scripts
-before_install:
-  - ./.travis/main.sh
-
-
-script:
-  - make docker-build
-
-
-# only execute the following instructions in
-# the case of a success (failing at this point
-# won't mark the build as a failure).
-# To have `DOCKER_USERNAME` and `DOCKER_PASSWORD`
-# filled you need to either use `travis`' cli
-# and then `travis set ..` or go to the travis
-# page of your repository and then change the
-# environment in the settings panel.
-after_success:
-  - if [[ "$TRAVIS_BRANCH" == "master" ]]; then
-    docker login -u $DOCKER_USERNAME -p $DOCKER_PASSWORD ;
-    make docker-push ;
-    fi
+go:
+  - 1.15.x