Dockerfile

# build stage
FROM golang:alpine AS builder

WORKDIR /go/src/github.com/foo/bar
COPY go.mod .
COPY go.sum .

RUN apk add --no-cache git

RUN go mod download

COPY . .

RUN CGO_ENABLED=0 GOOS=linux go build -a -o front.exec cmd/main.go

# final stage
FROM scratch as prod

COPY --from=builder /go/src/github.com/foo/bar app.exec

LABEL Name=super-app Version=0.0.1

EXPOSE 8081
ENTRYPOINT ["./app.exec"]