ARG TAG=latest
FROM docker.io/golang:${TAG} as builder
ARG CGO_ENABLED=0
WORKDIR /app

COPY go.mod go.sum ./
RUN go mod download
COPY . .

RUN go build

FROM scratch
COPY --from=builder /app/alertmanager-ntfy /alertmanager-ntfy
ENTRYPOINT ["/alertmanager-ntfy"]