added Gitea runner image

.gitea/workflows/build-gitea-runner.yaml

@@ -0,0 +1,32 @@
+name: CI
+on:
+  push:
+    branches: [ master ]
+    paths:
+      - 'gitea-runner/*'
+      - '.gitea/workflows/build-gitea-runner.yaml'      
+jobs:
+  "Build Gitea runner docker images":
+    runs-on: woryzen
+    steps:
+      -
+        name: Login to Gitea container registry
+        uses: docker/login-action@v3
+        with:
+          registry: gitea.woggioni.net
+          username: woggioni
+          password: ${{ secrets.PUBLISHER_TOKEN }}
+      -
+        name: Build and push synapse images
+        uses: docker/build-push-action@v6
+        with:
+          builder: multiplatform-builder
+          context: "{{defaultContext}}:gitea-runner"
+          platforms: |
+            linux/amd64
+            linux/arm64
+          push: true
+          pull: true
+          tags: |
+            "gitea.woggioni.net/woggioni/gitea-runner:latest"
+

gitea-runner/Dockerfile

@@ -0,0 +1,8 @@
+FROM alpine:3.24 AS base
+RUN mkdir /var/lib/gitea
+RUN deluser nobody
+RUN adduser gitea -h /var/lib/gitea -D -u 65534
+RUN --mount=type=cache,target=/var/cache/apk apk update
+RUN --mount=type=cache,target=/var/cache/apk apk add gitea-runner nodejs docker
+USER nobody
+CMD ["/usr/bin/gitea-runner", "daemon", "--config", "/var/lib/gitea/runner.yaml"]