Dockerfile build local files not remote files

Dockerfile

@@ -1,12 +1,53 @@
-FROM adamboutcher/statping-ng:base AS base
+FROM node:12.18.2-alpine AS frontend
+LABEL maintainer="Statping-ng (https://github.com/statping-ng)"
 ARG BUILDPLATFORM
-# Statping main Docker image that contains all required libraries
-FROM alpine:latest
+WORKDIR /statping
+COPY ./frontend/package.json .
+COPY ./frontend/yarn.lock .
+RUN yarn install --pure-lockfile --network-timeout 1000000
+COPY ./frontend .
+RUN yarn build && yarn cache clean
+
+# Statping Golang BACKEND building from source
+# Creates "/go/bin/statping" and "/usr/local/bin/sass" for copying
+FROM golang:1.14-alpine AS backend
+LABEL maintainer="Statping-NG (https://github.com/statping-ng)"
+ARG VERSION
+ARG COMMIT
+ARG BUILDPLATFORM
+ARG TARGETARCH
+RUN apk add --update --no-cache libstdc++ gcc g++ make git autoconf \
+    libtool ca-certificates linux-headers wget curl jq && \
+    update-ca-certificates
+
+WORKDIR /root
+RUN git clone https://github.com/sass/sassc.git
+RUN . sassc/script/bootstrap && make -C sassc -j4
+# sassc binary: /root/sassc/bin/sassc
+
+WORKDIR /go/src/github.com/statping-ng/statping-ng
+ADD go.mod go.sum ./
+RUN go mod download
+ENV GO111MODULE on
+ENV CGO_ENABLED 1
+RUN go get github.com/stretchr/testify/assert && \
+    go get github.com/stretchr/testify/require && \
+	go get github.com/GeertJohan/go.rice/rice && \
+	go get github.com/cortesi/modd/cmd/modd && \
+	go get github.com/crazy-max/xgo
+COPY . .
+COPY --from=frontend /statping/dist/ ./source/dist/
+RUN make clean generate embed
+RUN go build -a -ldflags "-s -w -extldflags -static -X main.VERSION=${VERSION} -X main.COMMIT=${COMMIT}" -o statping --tags "netgo linux" ./cmd
+RUN chmod a+x statping && mv statping /go/bin/statping
+# /go/bin/statping - statping binary
+# /root/sassc/bin/sassc - sass binary
+# /statping - Vue frontend (from frontend)
+
 RUN apk --no-cache add libgcc libstdc++ ca-certificates curl jq && update-ca-certificates
 
-COPY --from=base /go/bin/statping /usr/local/bin/
-COPY --from=base /root/sassc/bin/sassc /usr/local/bin/
-COPY --from=base /usr/local/share/ca-certificates /usr/local/share/
+RUN cp /go/bin/statping /usr/local/bin/
+RUN cp /root/sassc/bin/sassc /usr/local/bin/
 
 WORKDIR /app
 VOLUME /app
@@ -20,4 +61,4 @@ EXPOSE $PORT
 
 HEALTHCHECK --interval=60s --timeout=10s --retries=3 CMD curl -s "http://localhost:$PORT/health" | jq -r -e ".online==true"
 
-CMD statping --port $PORT
+CMD statping --port $PORT