MGMT-17896: Add separate Dockerfile for assisted-service with an el8 …

…base (#6347)

* Add separate Dockerfile for assisted-service with an el8 base

This is required to ensure that users have an option to install FIPS
clusters for versions where the installer is linked against el8 crypto
libraries.

The resulting image will be deployed by the operator when the user
indicates that clusters requiring the el8 libraries will be installed in
FIPS mode (versions < 4.16).

Resolves https://issues.redhat.com/browse/MGMT-17896

* Use a build arg to determine the base image

Instead of a separate Dockerfile for the el8 image an single build arg
will determine the base image.

Dockerfile.assisted-service

@@ -1,3 +1,5 @@
+ARG BASE_TAG=stream9
+
 # Generate python client
 FROM quay.io/edge-infrastructure/swagger-codegen-cli:2.4.18 as swagger_py
 COPY swagger.yaml .
@@ -13,9 +15,11 @@ RUN cd /assisted-service/build && python3 ../tools/client_package_initializer.py
 # TODO: Currently, the Python package is included in the service image for testing purposes. It conveniently allows matching a service version to a specific Python client version. In the future, once the Python package is published on pip, it should (probably) be removed from the Assisted Service image (this dockerfile).
 
 # Build binaries
-FROM quay.io/centos/centos:stream9 as builder
+FROM quay.io/centos/centos:$BASE_TAG as builder
 
-RUN dnf install --enablerepo=crb -y gcc git nmstate-devel && dnf clean all
+COPY hack/container_build_scripts/install_build_deps.sh .
+ARG BASE_TAG
+RUN ./install_build_deps.sh $BASE_TAG
 COPY --from=registry.ci.openshift.org/openshift/release:golang-1.20 /usr/local/go /usr/local/go
 
 ENV GOROOT=/usr/local/go
@@ -39,7 +43,7 @@ RUN cd ./cmd/webadmission && CGO_ENABLED=1 GOFLAGS="" GO111MODULE=on go build -o
 RUN cd ./cmd/agentbasedinstaller/client && CGO_ENABLED=1 GOFLAGS="" GO111MODULE=on go build -o /build/agent-installer-client
 
 # Create final image
-FROM quay.io/centos/centos:stream9
+FROM quay.io/centos/centos:$BASE_TAG
 
 # multiarch images need it till WRKLDS-222 and https://bugzilla.redhat.com/show_bug.cgi?id=2111537 are fixed
 RUN dnf install -y --setopt=install_weak_deps=False skopeo

hack/container_build_scripts/install_build_deps.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+tag=${1}
+
+repo=crb
+if [ "$tag" = "stream8" ]; then
+  repo=powertools
+fi
+
+dnf install --enablerepo=$repo -y gcc git nmstate-devel && dnf clean all