Remove unused dep tool

Author: Tobi Fuhrimann

Dockerfile

@@ -1,5 +1,4 @@
-FROM golang:latest
+FROM golang:1
 
-RUN curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
-RUN curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b $GOPATH/bin
-RUN go get -u github.com/frapposelli/wwhrd
+RUN curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b $GOPATH/bin \
+  && go get -u github.com/frapposelli/wwhrd