v1.2.0-rc1

Changelog

e1077d0 Add docker login to release workflow
90e98f4 Build docker image using goreleaser
1094b81 Add build badge
33e676f Cleanup github actions
432d287 Upgrade config for newer goreleaser version
f53bac9 Bump go version requirement
60db60d Create build.yml
de43d96 Remove travis integration
e57e64a Upgrade deps

Docker images

• docker pull emgag/varnish-towncrier:testing