Dockerfile: build smaller dist

Dockerfile

@@ -1,21 +1,21 @@
 FROM node:14.14.0-alpine3.10 AS builder
 WORKDIR /
 COPY package.json package-lock.json ./
-RUN npm install && mkdir frontend
+RUN npm install && npm install -g @angular/cli && mkdir frontend
 RUN mv node_modules ./frontend
 WORKDIR /frontend
 COPY . .
 
-RUN npm run ng build --prod --crossOrigin=anonymous
+RUN ng build --prod --crossOrigin=anonymous
 
 FROM golang:1.13.4-alpine as builder2
 RUN apk add git
 WORKDIR /
-COPY --from=builder /frontend/dist /dist
+COPY --from=builder /frontend/dist /dist 
 RUN go get github.com/rakyll/statik
 RUN statik --src=/dist/flotte-frontend
 COPY *.go *.sum *.mod /
-COPY vendor ./vendor
+COPY vendor /vendor
 RUN CGO_ENABLED=0 GOOS=linux go build --mod=vendor -o frontend_server
 
 FROM scratch