Add React UI building to the docker build flow

.dockerignore

@@ -1,3 +1,4 @@
 example
 tmp
 *.md
+web/build

Dockerfile

@@ -1,4 +1,12 @@
-FROM golang:1.12-alpine as builder
+# stage: 1
+FROM node:10 as react-build
+WORKDIR /web
+COPY web/ ./
+RUN yarn
+RUN yarn build
+
+# stage: 2
+FROM golang:1.12-alpine as go-build
 RUN apk update && \
     apk add --no-cache git && \
     apk add --no-cache upx=3.95-r1
@@ -7,7 +15,10 @@ RUN go get -u github.com/dosco/esc && \
     go get -u github.com/pilu/fresh
 
 WORKDIR /app
-ADD . /app
+COPY . /app
+
+RUN mkdir -p /app/web/build
+COPY --from=react-build /web/build/ ./web/build/
 
 ENV GO111MODULE=on
 RUN go mod vendor
@@ -16,15 +27,15 @@ RUN go generate ./... && \
     upx --ultra-brute -qq service && \
     upx -t service
 
-#second stage
+# stage: 3
 FROM alpine:latest
 WORKDIR /app
 
 RUN apk add --no-cache tzdata
 
-COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
-COPY --from=builder /app/service .
-COPY --from=builder /app/*.yml ./
+COPY --from=go-build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+COPY --from=go-build /app/service .
+COPY --from=go-build /app/*.yml ./
 
 RUN chmod +x /app/service
 USER nobody

docker-compose.yml

@@ -6,7 +6,7 @@ services:
   super_graph:
     build:
       context: .
-      target: builder
+      target: go-build
     environment:
       GO_ENV: "development"
     depends_on: