blumeops/containers/transmission-exporter/container.py

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"""Transmission Prometheus exporter — native Dagger build.
Minimal collect-on-scrape exporter using uv to resolve deps at runtime.
"""
import dagger
from dagger import dag
from blumeops.containers import oci_labels
VERSION = "1.0.1"
PYTHON_BASE = "python:3.14-alpine3.23"
UV_IMAGE = "ghcr.io/astral-sh/uv:0.11.6"
async def build(src: dagger.Directory) -> dagger.Container:
ctr = (
dag.container()
.from_(PYTHON_BASE)
.with_file("/usr/local/bin/uv", dag.container().from_(UV_IMAGE).file("/uv"))
.with_env_variable("PYTHONUNBUFFERED", "1")
.with_env_variable("UV_CACHE_DIR", "/tmp/uv-cache")
.with_workdir("/app")
.with_file(
"/app/exporter.py", src.file("containers/transmission-exporter/exporter.py")
)
.with_exposed_port(19091)
.with_user("65534:65534")
.with_default_args(args=["uv", "run", "--script", "/app/exporter.py"])
)
return oci_labels(
ctr,
title="Transmission Exporter",
description="Prometheus exporter for Transmission BitTorrent client",
version=VERSION,
)