prometheus-hetzner-sd/Dockerfile at master · promhippie/prometheus-hetzner-sd · GitHub

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FROM --platform=$BUILDPLATFORM golang:1.25.5-alpine3.21@sha256:b4dbd292a0852331c89dfd64e84d16811f3e3aae4c73c13d026c4d200715aff6 AS builder

RUN apk add --no-cache -U git curl
RUN sh -c "$(curl --location https://taskfile.dev/install.sh)" -- -d -b /usr/local/bin

WORKDIR /go/src/prometheus-hetzner-sd
COPY . /go/src/prometheus-hetzner-sd/

RUN --mount=type=cache,target=/go/pkg \
    go mod download -x

ARG TARGETOS
ARG TARGETARCH

RUN --mount=type=cache,target=/go/pkg \
    --mount=type=cache,target=/root/.cache/go-build \
    task generate build GOOS=${TARGETOS} GOARCH=${TARGETARCH}

FROM alpine:3.23@sha256:25109184c71bdad752c8312a8623239686a9a2071e8825f20acb8f2198c3f659

RUN apk add --no-cache ca-certificates mailcap && \
    addgroup -g 1337 prometheus-hetzner-sd && \
    adduser -D -u 1337 -h /var/lib/prometheus-hetzner-sd -G prometheus-hetzner-sd prometheus-hetzner-sd

EXPOSE 9000
VOLUME ["/var/lib/prometheus-hetzner-sd"]
ENTRYPOINT ["/usr/bin/prometheus-hetzner-sd"]
CMD ["server"]
HEALTHCHECK CMD ["/usr/bin/prometheus-hetzner-sd", "health"]

ENV PROMETHEUS_HETZNER_OUTPUT_ENGINE="http"
ENV PROMETHEUS_HETZNER_OUTPUT_FILE="/var/lib/prometheus-hetzner-sd/output.json"

COPY --from=builder /go/src/prometheus-hetzner-sd/bin/prometheus-hetzner-sd /usr/bin/prometheus-hetzner-sd
WORKDIR /var/lib/prometheus-hetzner-sd
USER prometheus-hetzner-sd