FROM golang:1.21 AS builder
LABEL fnkit.fn="true"
WORKDIR /app
COPY go.* ./
RUN go mod download
COPY . .
RUN CGO_ENABLED=0 GOOS=linux go build -o server ./cmd/main.go

FROM gcr.io/distroless/static-debian11
COPY --from=builder /app/server /server
ENV FUNCTION_TARGET=HelloWorld
EXPOSE 8080
CMD ["/server"]