Add pnpm store cache to runner via persistent Docker volume

Mount a named Docker volume (pnpm-store) into every job container
at the default pnpm store path. The volume persists in the DinD
sidecar across job runs, so pnpm install reuses cached packages.

infra/kubernetes/platform/gitea-runner/deployment.yaml

@@ -30,9 +30,14 @@ spec:
               value: "ubuntu-latest:docker://gitea.coreworlds.io/lazorgurl/runner-image:latest,linux/amd64:docker://gitea.coreworlds.io/lazorgurl/runner-image:latest,cluster:docker://gitea.coreworlds.io/lazorgurl/runner-image:latest"
             - name: DOCKER_HOST
               value: tcp://localhost:2375
+            - name: CONFIG_FILE
+              value: /config/config.yaml
           volumeMounts:
             - name: runner-data
               mountPath: /data
+            - name: runner-config
+              mountPath: /config
+              readOnly: true
           resources:
             requests:
               memory: 256Mi
@@ -60,5 +65,8 @@ spec:
       volumes:
         - name: runner-data
           emptyDir: {}
+        - name: runner-config
+          configMap:
+            name: gitea-runner-config
         - name: dind-storage
           emptyDir: {}

infra/kubernetes/platform/gitea-runner/kustomization.yaml

@@ -2,4 +2,5 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
   - deployment.yaml
+  - runner-config.yaml
   - gitea-runner-token-sealed.yaml

infra/kubernetes/platform/gitea-runner/runner-config.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: gitea-runner-config
+  namespace: platform
+data:
+  config.yaml: |
+    log:
+      level: info
+    runner:
+      capacity: 1
+      timeout: 3600
+    container:
+      options: "-v pnpm-store:/root/.local/share/pnpm/store"
+      valid_volumes:
+        - "pnpm-store"