Add static asset k8s manifest

kustomization.yaml

+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+namespace: ensembl-dev
+resources:
+    - static_assets_copy_job.yaml

static_assets_copy_job.yaml

+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: static-asset-copy
+spec:
+  backoffLimit: 2
+  activeDeadlineSeconds: 100
+  ttlSecondsAfterFinished: 5
+  template:
+    spec:
+      imagePullSecrets:
+        - name: ensemblweb-pull-secret
+      containers:
+      - name: static-asset-copy
+        image: dockerhub.ebi.ac.uk/ensembl-web/deploy-tools:0.5
+        tty: true
+        command: ["/usr/bin/download_artifacts.sh"]
+        args: [ "<PROJECT_ID>", "<JOB_ID>" ]
+        ports:
+          - containerPort: 8000
+        imagePullPolicy: Always
+        envFrom:
+          - configMapRef:
+              name: static-assets-copy-configmap
+          - secretRef:
+              name: artifact-download-token
+        volumeMounts:
+          - mountPath: "/usr/data"
+            name: static-asset-storage
+      restartPolicy: Never
+      volumes:
+        - name: static-asset-storage
+          persistentVolumeClaim:
+            claimName: ensembl-client-static-assets-pvc

static_assets_copy_job_configmap.yaml

+apiVersion: v1
+data:
+  HTTP_PROXY: http://hx-wwwcache.ebi.ac.uk:3128
+  HTTPS_PROXY: http://hx-wwwcache.ebi.ac.uk:3128
+  http_proxy: http://hx-wwwcache.ebi.ac.uk:3128
+  https_proxy: http://hx-wwwcache.ebi.ac.uk:3128
+kind: ConfigMap
+metadata:
+  name: static-assets-copy-configmap

static_assets_download_secret.yaml

+apiVersion: v1
+kind: Secret
+metadata:
+  name: artifact-download-token
+data:
+  token: <TOKEN_TO_DOWNLOAD_ARTIFACT>