FROM golang:1.25-alpine AS builder

RUN apk add --no-cache git
WORKDIR /build
COPY go.mod go.sum ./
RUN go mod download
COPY . .

RUN CGO_ENABLED=0 go build -trimpath \
    -ldflags="-s -w" \
    -o /kls .

FROM alpine:3.21

RUN apk add --no-cache ca-certificates tzdata
COPY --from=builder /kls /usr/local/bin/kls

WORKDIR /srv/kls

ENTRYPOINT ["kls"]
CMD ["-f", "/srv/kls/kls.conf"]