Initial MVP commit

Containerfile

@@ -0,0 +1,19 @@
+FROM docker.io/golang:1.23 AS builder
+
+RUN apt-get update && apt-get install -y libsystemd-dev
+
+WORKDIR /goatcounter-systemd/
+
+COPY ./ /goatcounter-systemd/
+
+ENV GOCACHE="/go/pkg/mod"
+RUN --mount=type=cache,target="/go/pkg/mod" go build \
+    -o /usr/local/bin/goatcounter-systemd
+
+FROM docker.io/debian:stable-slim
+
+COPY --from=builder /usr/local/bin/goatcounter-systemd /usr/local/bin/goatcounter-systemd
+
+USER nobody
+
+ENTRYPOINT [ "/usr/local/bin/goatcounter-systemd" ]