Moved attributes to dns. namespace

Dockerfile

@@ -1,6 +1,9 @@
-FROM golang:1.10
+FROM golang:1.16-alpine
+RUN apk add libcap git
 WORKDIR $GOPATH/src/git.k-space.ee/pinecrypt/goredns
+COPY go.mod .
+RUN go mod download
 COPY main.go .
-RUN go get -d -v ./...
-RUN go install -v ./...
-CMD ["goredns"]
+RUN go build -o goredns main.go
+RUN setcap 'cap_net_bind_service=+ep' goredns
+CMD ["./goredns"]