FROM golang:1.25.3 AS build
WORKDIR /app
COPY go.mod go.sum ./
RUN go mod download

COPY . .
RUN GOOS=linux GOARCH=amd64 GOAMD64=v1 go build -pgo=auto -ldflags="-s -w" -o bin/esign-server main.go

FROM alpine:latest
WORKDIR /app
COPY --from=build /app/bin/esign-server .
EXPOSE 4320
CMD ["./esign-server"]