runner/examples/kubernetes/dind-docker.yaml

# Secret data.
# You will need to retrive this from the web UI, and your Forgejo instance must be running v1.21+
# Alternatively, create this with
# kubectl create secret generic runner-secret --from-literal=token=your_offline_token_here
apiVersion: v1
stringData:
  token: your_offline_secret_here
kind: Secret
metadata:
  name: runner-secret
---
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: forgejo-runner
  name: forgejo-runner
spec:
  # Two replicas means that if one is busy, the other can pick up jobs.
  replicas: 2
  selector:
    matchLabels:
      app: forgejo-runner
  strategy: {}
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: forgejo-runner
    spec:
      restartPolicy: Always
      volumes:
      - name: docker-certs
        emptyDir: {}
      - name: runner-data
        emptyDir: {}
      # Initialise our configuration file using offline registration
      # https://forgejo.org/docs/v1.21/admin/actions/#offline-registration
      initContainers:
        - name: runner-register
          image: code.forgejo.org/forgejo/runner:3.2.0
          command: ["forgejo-runner", "register", "--no-interactive", "--token", $(RUNNER_SECRET), "--name", $(RUNNER_NAME), "--instance", $(FORGEJO_INSTANCE_URL)]
          env:
            - name: RUNNER_NAME
              valueFrom:
                fieldRef:
                  fieldPath: metadata.name
            - name: RUNNER_SECRET
              valueFrom:
                secretKeyRef:
                  name: runner-secret
                  key: token
            - name: FORGEJO_INSTANCE_URL
              value: http://forgejo-http.forgejo.svc.cluster.local:3000
          resources:
            limits:
              cpu: "0.50"
              memory: "64Mi"
          volumeMounts:
            - name: runner-data
              mountPath: /data
      containers:
      - name: runner
        image: code.forgejo.org/forgejo/runner:3.0.0
        command: ["sh", "-c", "while ! nc -z localhost 2376 </dev/null; do echo 'waiting for docker daemon...'; sleep 5; done; forgejo-runner daemon"]
        env:
        - name: DOCKER_HOST
          value: tcp://localhost:2376
        - name: DOCKER_CERT_PATH
          value: /certs/client
        - name: DOCKER_TLS_VERIFY
          value: "1"
        volumeMounts:
        - name: docker-certs
          mountPath: /certs
        - name: runner-data
          mountPath: /data
      - name: daemon
        image: docker:23.0.6-dind
        env:
        - name: DOCKER_TLS_CERTDIR
          value: /certs
        securityContext:
          privileged: true
        volumeMounts:
        - name: docker-certs
          mountPath: /certs