[werft] fix image pull secret not render

Specify the kubeconfig file to use.

Signed-off-by: JenTing Hsiao <[email protected]>

.werft/jobs/build/deploy-to-preview-environment.ts

@@ -78,7 +78,7 @@ export async function deployToPreviewEnvironment(werft: Werft, jobConfig: JobCon
     const domain = withVM ? `${destname}.preview.gitpod-dev.com` : `${destname}.staging.gitpod-dev.com`;
     const monitoringDomain = `${destname}.preview.gitpod-dev.com`;
     const url = `https://${domain}`;
-    const imagePullAuth = exec(`printf "%s" "_json_key:$(kubectl get secret ${IMAGE_PULL_SECRET_NAME} --namespace=keys -o yaml \
+    const imagePullAuth = exec(`printf "%s" "_json_key:$(kubectl --kubeconfig ${CORE_DEV_KUBECONFIG_PATH} get secret ${IMAGE_PULL_SECRET_NAME} --namespace=keys -o yaml \
         | yq r - data['.dockerconfigjson'] \
         | base64 -d)" | base64 -w 0`, { silent: true }).stdout.trim();