Go and UI Multistage Dockerfile

Dockerfile

FROM golang:1.21-alpine3.18 AS builder
WORKDIR /app
COPY go.mod go.sum ./
RUN go mod download
COPY . ./
RUN CGO_ENABLED=0 GOOS=linux go build -a -o main .

FROM node:18-alpine3.15 AS frontend
WORKDIR /ui
COPY ui .
RUN npm install
RUN npm run build

FROM alpine:3.18 AS production
COPY --from=builder /app/main .
COPY --from=frontend /ui/public /ui
CMD ["./main"]