fix dockerfile

Dockerfile

@@ -1,12 +1,25 @@
-FROM golang:alpine AS builder
+FROM node:alpine AS frontend_builder
 WORKDIR /app
-COPY . .
-RUN go build -o main .
+COPY package.json package-lock.json ./
+RUN npm ci
+COPY src ./src
+COPY public ./public
+COPY tsconfig.json ./
+COPY index.html ./
+RUN npm run build
 
+FROM golang:alpine AS server_builder
+WORKDIR /app
+COPY go.mod ./
+RUN go mod download
+COPY main.go ./
+COPY --from=frontend_builder /app/dist ./dist
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o main
 
 FROM alpine:latest
 WORKDIR /app
-COPY --from=builder /app/main /app/main
-COPY --from=builder /app/dist /app/dist
+RUN apk add --no-cache ca-certificates
+COPY --from=server_builder /app/main ./main
+COPY --from=server_builder /app/dist ./dist
 EXPOSE 8181
-CMD ["/app/main"]
+CMD ["./main"]