* feat: separate test job into separate workflow
* feat: add dependabot for github actions, docker and go
* feat: new releaes workflow
* feat: add docker build step
* feat: add docker build step
* chore: remove unused steps in the Dockerfile
Since it is multistage, we don't need to remove stuff like `git` since we only copy the binary
* refactor: Dockerfile now cache better
The layers that have a less chance of being updated, is added earlier
* build: use golang `1.17.2` as builder stage
* build: use alpine `3.14.2` as runtime stage
* chore: remove `gcc` from runtime stage
* feat: add heroku step
* chore: remove `main.yaml` workflow
* fix: remove `latest` flavor, the action handles it
Ole-Martin Bratteng