Building the docker image does currently not work because go.mod does not exist.
By running: `docker build -t kubescape -f build/Dockerfile .`
It fails:
```
Step 7/10 : RUN GOOS=linux CGO_ENABLED=0 go build -ldflags="-s -w " -installsuffix cgo -o kubescape .
---> Running in 3e7d4a124446
cautils/k8sinterface/cloudvendorregistrycreds.go:14:2: missing go.sum entry for module providing package github.com/aws/aws-sdk-go/aws (imported by github.com/armosec/kubescape/cautils/k8sinterface); to add:
go get github.com/armosec/kubescape/cautils/k8sinterface
cautils/k8sinterface/cloudvendorregistrycreds.go:15:2: missing go.sum entry for module providing package github.com/aws/aws-sdk-go/aws/session (imported by github.com/armosec/kubescape/cautils/k8sinterface); to add:
go get github.com/armosec/kubescape/cautils/k8sinterface
...
```
By changing mod download to go mod tidy, it creates go.sum and the docker build works.
