More efficient builds and some fixes to the Go binaries

Dockerfile

@@ -4,24 +4,24 @@ WORKDIR $GOPATH/src/github.com/grafana/grafana
 COPY Gopkg.toml Gopkg.lock ./
 RUN dep ensure --vendor-only
 COPY pkg pkg
-RUN go install ./pkg/cmd/grafana-server
-RUN go install ./pkg/cmd/grafana-cli
-RUN strip $GOPATH/bin/grafana-server
-RUN strip $GOPATH/bin/grafana-cli
+RUN go install -ldflags="-s -w" ./pkg/cmd/grafana-server
+RUN go install -ldflags="-s -w" ./pkg/cmd/grafana-cli
 
 FROM node:8
 WORKDIR /usr/src/app/
 COPY package.json yarn.lock ./
 RUN yarn install --frozen-lockfile
 ENV NODE_ENV production
-COPY . ./
+COPY Gruntfile.js tsconfig.json tslint.json ./
+COPY public public
+COPY scripts scripts
+COPY emails emails
 RUN yarn run build
 
 FROM debian:stretch-slim
 WORKDIR /app
 ENV PATH $PATH:/app/bin
-COPY --from=0 /go/bin/grafana-server ./bin/
-COPY --from=0 /go/bin/grafana-cli ./bin/
+COPY --from=0 /go/bin/grafana-server /go/bin/grafana-cli ./bin/
 COPY --from=1 /usr/src/app/public ./public
 COPY --from=1 /usr/src/app/tools ./tools
 COPY conf ./conf