Bump Dockerfile.dapper to using go 1.17

Signed-off-by: Arvind Iyengar <[email protected]>

Dockerfile.dapper

@@ -1,18 +1,16 @@
-FROM golang:1.16-alpine3.12
+FROM golang:1.17-alpine3.16
 
 ARG DAPPER_HOST_ARCH
 ENV ARCH $DAPPER_HOST_ARCH
 
 RUN apk -U add bash git gcc musl-dev docker vim less file curl wget ca-certificates
-RUN GO111MODULE=on GOPROXY=direct go get golang.org/x/tools/cmd/goimports@gopls/v0.8.2
-RUN rm -rf /go/src /go/pkg
+RUN GOPROXY=direct go get golang.org/x/tools/cmd/goimports@gopls/v0.8.2
 
 RUN if [ "${ARCH}" == "amd64" ]; then \
         curl -sL https://raw.githubusercontent.com/golangci/golangci-lint/v1.45.2/install.sh | sh -s; \
         go install sigs.k8s.io/kustomize/kustomize/[email protected]; \
     fi
 
-ENV GO111MODULE off
 ENV DAPPER_ENV REPO TAG DRONE_TAG
 ENV DAPPER_SOURCE /go/src/github.com/k3s-io/helm-controller/
 ENV DAPPER_OUTPUT ./bin ./dist