ci: temporarily revert runners to public images to bootstrap custom image build

## Problem

Init container skips registration if `.runner` file exists on PVC:
```
test -f /data/.runner || forgejo-runner register ...
```

This means changing runner labels in `values.yaml` (e.g. the label image fix from PR #1) has **no effect** until PVCs are manually deleted — not GitOps-friendly.

## Fix

Always delete `.runner` and re-register on every pod start:
```
rm -f /data/.runner
forgejo-runner register --no-interactive ...
```

Labels now stay in sync with `values.yaml` automatically. ArgoCD syncs → pods restart → init re-registers with current labels.

## Files Changed

- `k8s/infra/forgejo-runner/templates/deployment.yaml` (init container logic)

## After Merge

ArgoCD syncs → deployment spec changes → pods restart → init re-registers with new labels from PR #1 → CI works across all repos.Reviewed-on: #2

Co-authored-by: rock <[email protected]>

.gitea/workflows/build-runner-images.yml

@@ -0,0 +1,93 @@
+name: Build & Push Runner Images
+
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:  # Manual trigger
+  schedule:
+    - cron: '0 2 * * 0'  # Weekly on Sunday 2 AM UTC (ensure fresh images)
+
+env:
+  REGISTRY: forgejo.riotpiao.com
+
+jobs:
+  build-runner-images:
+    name: Build & Push All Runner Images
+    runs-on: golang
+    steps:
+      - name: Install Node.js and Docker
+        run: |
+          apt-get update
+          apt-get install -y nodejs docker.io
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Get short SHA
+        id: sha
+        run: |
+          SHORT_SHA=$(git rev-parse --short HEAD)
+          echo "short_sha=${SHORT_SHA}" >> $GITHUB_OUTPUT
+
+      - name: Registry login
+        run: |
+          echo "${REGISTRY_TOKEN}" | docker login "${REGISTRY}" \
+            --username "${REGISTRY_USER}" --password-stdin
+        env:
+          REGISTRY_USER: ${{ secrets.FORGEJO_REGISTRY_USER }}
+          REGISTRY_TOKEN: ${{ secrets.FORGEJO_REGISTRY_TOKEN }}
+
+      - name: Build and push Golang runner image
+        run: |
+          IMAGE="${REGISTRY}/rock/forgejo-runner-golang"
+          echo "Building: ${IMAGE}:${{ steps.sha.outputs.short_sha }}"
+          
+          docker build --no-cache \
+            -f k8s/infra/forgejo-runner-images/Dockerfile.golang \
+            -t "${IMAGE}:${{ steps.sha.outputs.short_sha }}" \
+            -t "${IMAGE}:latest" \
+            .
+          
+          docker push "${IMAGE}:${{ steps.sha.outputs.short_sha }}"
+          docker push "${IMAGE}:latest"
+          echo "✓ Pushed golang runner"
+
+      - name: Build and push Node runner image
+        run: |
+          IMAGE="${REGISTRY}/rock/forgejo-runner-node"
+          echo "Building: ${IMAGE}:${{ steps.sha.outputs.short_sha }}"
+          
+          docker build --no-cache \
+            -f k8s/infra/forgejo-runner-images/Dockerfile.node \
+            -t "${IMAGE}:${{ steps.sha.outputs.short_sha }}" \
+            -t "${IMAGE}:latest" \
+            .
+          
+          docker push "${IMAGE}:${{ steps.sha.outputs.short_sha }}"
+          docker push "${IMAGE}:latest"
+          echo "✓ Pushed node runner"
+
+      - name: Build and push Rust runner image
+        run: |
+          IMAGE="${REGISTRY}/rock/forgejo-runner-rust"
+          echo "Building: ${IMAGE}:${{ steps.sha.outputs.short_sha }}"
+          
+          docker build --no-cache \
+            -f k8s/infra/forgejo-runner-images/Dockerfile.rust \
+            -t "${IMAGE}:${{ steps.sha.outputs.short_sha }}" \
+            -t "${IMAGE}:latest" \
+            .
+          
+          docker push "${IMAGE}:${{ steps.sha.outputs.short_sha }}"
+          docker push "${IMAGE}:latest"
+          echo "✓ Pushed rust runner"
+
+      - name: Prune unused images
+        run: docker image prune -a --force 2>&1 | tail -3 || true
+
+      - name: Summary
+        run: |
+          echo "=== Runner Images Built and Pushed ===" 
+          echo "✓ forgejo.riotpiao.com/rock/forgejo-runner-golang:latest"
+          echo "✓ forgejo.riotpiao.com/rock/forgejo-runner-node:latest"
+          echo "✓ forgejo.riotpiao.com/rock/forgejo-runner-rust:latest"

k8s/infra/forgejo-runner-images/Dockerfile.golang

@@ -0,0 +1,12 @@
+FROM golang:1.26-bookworm
+
+# Install Node.js, npm, and Docker CLI
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    nodejs npm docker.io \
+    && rm -rf /var/lib/apt/lists/*
+
+# Verify installations
+RUN go version && node --version && npm --version && docker --version
+
+LABEL maintainer="homelab" \
+      description="Golang 1.26 + Node.js + Docker CLI pre-installed"

k8s/infra/forgejo-runner-images/Dockerfile.node

@@ -0,0 +1,12 @@
+FROM node:22-bookworm
+
+# Node.js already installed, add Docker CLI
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    docker.io \
+    && rm -rf /var/lib/apt/lists/*
+
+# Verify installations
+RUN node --version && npm --version && docker --version
+
+LABEL maintainer="homelab" \
+      description="Node.js 22 + Docker CLI pre-installed"

k8s/infra/forgejo-runner-images/Dockerfile.rust

@@ -0,0 +1,12 @@
+FROM rust:1-bookworm
+
+# Add Node.js and Docker CLI
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    nodejs npm docker.io \
+    && rm -rf /var/lib/apt/lists/*
+
+# Verify installations
+RUN rustc --version && cargo --version && node --version && npm --version && docker --version
+
+LABEL maintainer="homelab" \
+      description="Rust 1 + Node.js + Docker CLI pre-installed"

k8s/infra/forgejo-runner/templates/deployment.yaml

@@ -60,11 +60,15 @@ spec:
       containers:
         - name: runner
           image: {{ .Values.runner.image.repository }}:{{ .Values.runner.image.tag }}
-          command: ["sh", "-c", "while ! wget -q -O- http://localhost:2375/_ping >/dev/null 2>&1; do echo 'waiting for dind...'; sleep 2; done; echo 'dind ready'; forgejo-runner daemon --config /etc/forgejo-runner/config.yaml"]
+          command: ["sh", "-c", "forgejo-runner daemon --config /etc/forgejo-runner/config.yaml"]
           workingDir: /data
           env:
             - name: DOCKER_HOST
-              value: tcp://localhost:2375
+              value: tcp://localhost:2376
+            - name: DOCKER_TLS_VERIFY
+              value: "1"
+            - name: DOCKER_CERT_PATH
+              value: /docker-certs/client
           volumeMounts:
             - name: runner-data
               mountPath: /data
@@ -87,7 +91,7 @@ spec:
             privileged: true    # required for DinD; cicd namespace is labelled privileged
           env:
             - name: DOCKER_TLS_CERTDIR
-              value: ""
+              value: /docker-certs
           volumeMounts:
             - name: docker-certs
               mountPath: /docker-certs