Use production-ready Dockerfile template for Go images

[mgencur]

Related to https://issues.redhat.com/browse/SRVCOM-3255

• The Dockerfiles now accept arguments: GO_BUILDER, GO_RUNTIME, VERSION
• There are default values that are used in CI. For Konflux, these arguments would be passed from the Tekton pipeline to override the versions used by the Dockerfile.
• This approach works in CI where images are properly replaced: Given this dockerfile:

  
  # DO NOT EDIT! Generated Dockerfile for cmd/apiserver_receive_adapter.
  ARG GO_BUILDER=registry.ci.openshift.org/openshift/release:rhel-8-release-golang-1.22-openshift-4.17
  ARG UBI8_MINIMAL=registry.access.redhat.com/ubi8/ubi-minimal
  ARG VERSION=knative-v1.15

FROM $GO_BUILDER as builder

COPY . .

ENV CGO_ENABLED=1 ENV GOEXPERIMENT=strictfipsruntime

RUN go build -tags strictfipsruntime -o /usr/bin/main ./cmd/apiserver_receive_adapter

FROM $UBI8_MINIMAL

Install the missing zoneinfo to ubi-minimal

RUN microdnf install tzdata

USER 65532

COPY --from=builder /usr/bin/main /usr/bin/main

LABEL \ com.redhat.component="openshift-serverless-1-eventing-apiserver-receive-adapter-rhel8-container" \ name="openshift-serverless-1/eventing-apiserver-receive-adapter-rhel8" \ version="$VERSION" \ summary="Red Hat OpenShift Serverless 1 Eventing Apiserver Receive Adapter" \ maintainer="serverless-support@redhat.com" \ description="Red Hat OpenShift Serverless 1 Eventing Apiserver Receive Adapter" \ io.k8s.display-name="Red Hat OpenShift Serverless 1 Eventing Apiserver Receive Adapter"

ENTRYPOINT ["/usr/bin/main"]

The CI config would be generated in this way:

base_images: ocp_ubi-minimal_8: name: ubi-minimal namespace: ocp tag: "8" openshift_release_rhel-8-release-golang-1.22-openshift-4.17: name: release namespace: openshift tag: rhel-8-release-golang-1.22-openshift-4.17 images:

• dockerfile_path: openshift/ci-operator/knative-images/apiserver_receive_adapter/Dockerfile inputs: ocp_ubi-minimal_8: as:
  • $UBI8_MINIMAL openshift_release_rhel-8-release-golang-1.22-openshift-4.17: as:
  • $GO_BUILDER to: knative-eventing-apiserver-receive-adapter

Next steps after merging this PR would be:

• Re-generate Dockerfiles through Github actions in Eventing and other repos that use automation for generating Dockerfiles
• Re-generate CI configs for the repos.
• Implement passing the arguments to the build from Tekton pipeline (not done yet).
• Onboard other repos that don't use the automation yet (Serving, etc.)

[mgencur]

/hold

[mgencur]

/unhold

[mgencur]

Rebased. Ready for review.

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mgencur, pierDipi

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