Build and publish assisted-service-el8 image

This image is required for assisted-service to be able to install
clusters of version <4.16 in FIPS environments.

Resolves https://issues.redhat.com/browse/MGMT-17897

ci-operator/config/openshift/assisted-service/openshift-assisted-service-master__edge.yaml

@@ -107,6 +107,12 @@ images:
       as:
       - registry.ci.openshift.org/openshift/release:golang-1.20
   to: assisted-service
+- dockerfile_path: Dockerfile.assisted-service.el8
+  inputs:
+    openshift_release_golang-1.20:
+      as:
+      - registry.ci.openshift.org/openshift/release:golang-1.20
+  to: assisted-service-el8
 - dockerfile_literal: |
     FROM coreos/centos
     COPY . .
@@ -167,6 +173,15 @@ tests:
       SOURCE_IMAGE_REF: assisted-service
     test:
     - ref: assisted-baremetal-images-publish
+- as: mirror-nightly-image-el8
+  cron: '@daily'
+  steps:
+    dependencies:
+      SOURCE_IMAGE_REF: assisted-service-el8
+    env:
+      IMAGE_REPO: assisted-service-el8
+    test:
+    - ref: assisted-baremetal-images-publish
 - as: mirror-vcsref-image
   postsubmit: true
   steps:

ci-operator/jobs/openshift/assisted-service/openshift-assisted-service-master-periodics.yaml

@@ -850,6 +850,67 @@ periodics:
     - name: result-aggregator
       secret:
         secretName: result-aggregator
+- agent: kubernetes
+  cluster: build04
+  cron: 24 22 * * *
+  decorate: true
+  extra_refs:
+  - base_ref: master
+    org: openshift
+    repo: assisted-service
+  labels:
+    ci-operator.openshift.io/variant: edge
+    ci.openshift.io/generator: prowgen
+    job-release: "4.16"
+    pj-rehearse.openshift.io/can-be-rehearsed: "true"
+  name: periodic-ci-openshift-assisted-service-master-edge-mirror-nightly-image-el8
+  spec:
+    containers:
+    - args:
+      - --gcs-upload-secret=/secrets/gcs/service-account.json
+      - --image-import-pull-secret=/etc/pull-secret/.dockerconfigjson
+      - --report-credentials-file=/etc/report/credentials
+      - --secret-dir=/secrets/ci-pull-credentials
+      - --target=mirror-nightly-image-el8
+      - --variant=edge
+      command:
+      - ci-operator
+      image: ci-operator:latest
+      imagePullPolicy: Always
+      name: ""
+      resources:
+        requests:
+          cpu: 10m
+      volumeMounts:
+      - mountPath: /secrets/ci-pull-credentials
+        name: ci-pull-credentials
+        readOnly: true
+      - mountPath: /secrets/gcs
+        name: gcs-credentials
+        readOnly: true
+      - mountPath: /secrets/manifest-tool
+        name: manifest-tool-local-pusher
+        readOnly: true
+      - mountPath: /etc/pull-secret
+        name: pull-secret
+        readOnly: true
+      - mountPath: /etc/report
+        name: result-aggregator
+        readOnly: true
+    serviceAccountName: ci-operator
+    volumes:
+    - name: ci-pull-credentials
+      secret:
+        secretName: ci-pull-credentials
+    - name: manifest-tool-local-pusher
+      secret:
+        secretName: manifest-tool-local-pusher
+    - name: pull-secret
+      secret:
+        secretName: registry-pull-credentials
+    - name: result-aggregator
+      secret:
+        secretName: result-aggregator
 - agent: kubernetes
   cluster: build04
   cron: 00 00 */1 * 0-5