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

apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{ .Release.Name }}
  namespace: {{ .Release.Namespace }}
  labels:
    app: {{ .Release.Name }}
spec:
  replicas: 1
  strategy:
    type: Recreate    # RWO PVCs — old pod must terminate before new one mounts them
  selector:
    matchLabels:
      app: {{ .Release.Name }}
  template:
    metadata:
      labels:
        app: {{ .Release.Name }}
    spec:
      # runner image runs as UID 1000; fsGroup makes the Longhorn /data PVC
      # group-writable so `register` can write /data/.runner (else permission denied).
      securityContext:
        fsGroup: 1000
      tolerations:
        {{- toYaml .Values.tolerations | nindent 8 }}
      {{- with .Values.nodeSelector }}
      nodeSelector:
        {{- toYaml . | nindent 8 }}
      {{- end }}

      initContainers:
        - name: register
          image: {{ .Values.runner.image.repository }}:{{ .Values.runner.image.tag }}
          command: ["sh", "-c"]
          args:
            - |
              # Always re-register to keep labels in sync with values.yaml.
              # Without this, changing a runner label requires manually deleting
              # the PVC or .runner file — not GitOps-friendly.
              rm -f /data/.runner
              forgejo-runner register --no-interactive \
                --instance {{ .Values.runner.forgejoUrl }} \
                --token $(RUNNER_TOKEN) \
                --name {{ .Values.runner.name }} \
                --labels "{{ .Values.runner.labels }}"
          env:
            - name: RUNNER_TOKEN
              valueFrom:
                secretKeyRef:
                  name: {{ .Values.runner.tokenSecret }}
                  key: token
          volumeMounts:
            - name: runner-data
              mountPath: /data
            - name: homelab-ca
              mountPath: /etc/ssl/certs/homelab-ca.pem
              subPath: ca.crt
          workingDir: /data

      containers:
        - name: runner
          image: {{ .Values.runner.image.repository }}:{{ .Values.runner.image.tag }}
          command: ["sh", "-c", "forgejo-runner daemon --config /etc/forgejo-runner/config.yaml"]
          workingDir: /data
          env:
            - name: DOCKER_HOST
              value: tcp://localhost:2376
            - name: DOCKER_TLS_VERIFY
              value: "1"
            - name: DOCKER_CERT_PATH
              value: /docker-certs/client
          volumeMounts:
            - name: runner-data
              mountPath: /data
            - name: docker-certs
              mountPath: /docker-certs
            - name: docker-sock
              mountPath: /run
            - name: homelab-ca
              mountPath: /etc/ssl/certs/homelab-ca.pem
              subPath: ca.crt
            - name: runner-config
              mountPath: /etc/forgejo-runner
              readOnly: true
          resources:
            {{- toYaml .Values.runner.resources | nindent 12 }}

        - name: dind
          image: {{ .Values.dind.image.repository }}:{{ .Values.dind.image.tag }}
          securityContext:
            privileged: true    # required for DinD; cicd namespace is labelled privileged
          env:
            - name: DOCKER_TLS_CERTDIR
              value: /docker-certs
          volumeMounts:
            - name: docker-certs
              mountPath: /docker-certs
            - name: docker-sock
              mountPath: /run
            - name: dind-storage
              mountPath: /var/lib/docker
            - name: homelab-ca
              mountPath: /etc/ssl/certs/homelab-ca.pem
              subPath: ca.crt
            # dockerd resolves per-registry CAs from /etc/docker/certs.d/<host>/
            # before falling back to the system pool. Mounting it here is what
            # makes `docker push forgejo.riotpiao.com/...` trust the homelab CA
            # rather than failing x509: signed by unknown authority.
            - name: homelab-ca
              mountPath: /etc/docker/certs.d/forgejo.riotpiao.com/ca.crt
              subPath: ca.crt
          resources:
            {{- toYaml .Values.dind.resources | nindent 12 }}

      volumes:
        - name: runner-data
          persistentVolumeClaim:
            claimName: {{ .Release.Name }}-reg
        - name: dind-storage
          persistentVolumeClaim:
            claimName: {{ .Release.Name }}-dind
        - name: docker-certs
          emptyDir: {}    # DinD regenerates mTLS certs on each start
        - name: docker-sock
          emptyDir: {}    # Shared docker socket between dind and runner
        - name: homelab-ca
          # homelab-ca is a ConfigMap (public CA trust bundle), not a Secret.
          # The volumeMounts use subPath: ca.crt to project the single cert file.
          configMap:
            name: homelab-ca
        - name: runner-config
          configMap:
            name: {{ .Release.Name }}-config