Build forgejo-runner container locally via native Dagger pipeline

Replace upstream code.forgejo.org/forgejo/runner image with a locally
built container using the container.py pattern (Go + Alpine runtime).
Kustomization tag is a placeholder until CI builds the image.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

argocd/manifests/forgejo-runner/kustomization.yaml

@@ -10,7 +10,8 @@ resources:
 
 images:
   - name: code.forgejo.org/forgejo/runner
-    newTag: "12.7.3"
+    newName: registry.ops.eblu.me/blumeops/forgejo-runner
+    newTag: "kustomized"
   - name: docker
     newTag: 27-dind
 

containers/forgejo-runner/container.py

@@ -0,0 +1,67 @@
+"""Forgejo Runner — native Dagger build.
+
+Two-stage build: Go (static binary with CGO for SQLite), Alpine (runtime).
+Source cloned from forge mirror.
+"""
+
+import dagger
+from dagger import dag
+
+from blumeops.containers import (
+    alpine_runtime,
+    clone_from_forge,
+    oci_labels,
+)
+
+VERSION = "12.7.3"
+
+
+async def build(src: dagger.Directory) -> dagger.Container:
+    source = clone_from_forge("forgejo-runner", f"v{VERSION}")
+
+    # Stage 1: Build Go binary (static, CGO enabled for SQLite)
+    ldflags = (
+        '-extldflags "-static" -s -w'
+        f' -X "code.forgejo.org/forgejo/runner/v12/internal/pkg/ver.version=v{VERSION}"'
+    )
+    backend = (
+        dag.container()
+        .from_("golang:alpine3.22")
+        .with_exec(["apk", "add", "--no-cache", "build-base", "git"])
+        .with_directory("/app", source)
+        .with_workdir("/app")
+        .with_env_variable("CGO_ENABLED", "1")
+        .with_env_variable("CGO_CFLAGS", "-DSQLITE_MAX_VARIABLE_NUMBER=32766")
+        .with_exec(
+            [
+                "go",
+                "build",
+                "-tags=netgo osusergo",
+                f"-ldflags={ldflags}",
+                "-o",
+                "/forgejo-runner",
+                ".",
+            ]
+        )
+    )
+
+    # Stage 2: Runtime
+    runtime = alpine_runtime(
+        extra_apk=["git", "bash", "ca-certificates"],
+        uid=1000,
+        gid=1000,
+        username="runner",
+    )
+    runtime = oci_labels(
+        runtime,
+        title="Forgejo Runner",
+        description="A runner for Forgejo Actions",
+        version=VERSION,
+    )
+    return (
+        runtime.with_file("/bin/forgejo-runner", backend.file("/forgejo-runner"))
+        .with_env_variable("HOME", "/data")
+        .with_user("1000:1000")
+        .with_workdir("/data")
+        .with_default_args(args=["/bin/forgejo-runner"])
+    )

docs/changelog.d/local-forgejo-runner.infra.md

@@ -0,0 +1 @@
+Build forgejo-runner container locally via native Dagger pipeline instead of pulling from upstream.