OCM-2620 | build: Add files for building releases from Konflux

Added Dockerfile to be used from pipeline builds for release generations
using Red Hat keys. Also added some needed modifications and removed old
files related to previous release workflow.

Signed-off-by: Enrique Belarte Luque <[email protected]>

Dockerfile

@@ -0,0 +1,17 @@
+FROM registry.access.redhat.com/ubi9/go-toolset:latest AS builder
+COPY . .
+
+ENV GOFLAGS=-buildvcs=false
+RUN git config --global --add safe.directory /opt/app-root/src && \
+    make prepare_release
+
+FROM registry.access.redhat.com/ubi9/ubi-micro:latest
+LABEL description="Terraform Provider RHCS"
+LABEL io.k8s.description="Terraform Provider RHCS"
+LABEL com.redhat.component="terraform-provider-rhcs"
+LABEL distribution-scope="release"
+LABEL name="terraform-provider-rhcs" release="X.Y" url="https://github.com/terraform-redhat/terraform-provider-rhcs"
+LABEL vendor="Red Hat, Inc."
+LABEL version="X.Y"
+
+COPY --from=builder /opt/app-root/src/releases /releases

Makefile

@@ -37,6 +37,7 @@ import_path:=github.com/terraform-redhat/terraform-provider-rhcs
 version=$(shell git describe --abbrev=0 | sed 's/^v//' | sed 's/-prerelease\.[0-9]*//')
 commit:=$(shell git rev-parse --short HEAD)
 git_status:=$(shell git status --porcelain)
+REL_VER=$(version)
 
 # Set the linker flags so that the version will be included in the binaries:
 ldflags:=\
@@ -140,3 +141,7 @@ e2e_test: tools install
 .PHONY: check-gen
 check-gen: generate
 	scripts/assert_no_diff.sh "generate"
+
+.PHONY: prepare_release
+prepare_release:
+	import_path=${import_path} ldflags="${ldflags}" bash ./build/build_multiarch

build/build_multiarch

@@ -0,0 +1,31 @@
+#!/bin/bash
+archs=(amd64 arm64)
+oses=(linux darwin windows)
+
+REL_VER=$(git describe --tags --abbrev=0 | sed "s/v//")
+if [[ -z "$REL_VER" ]]; then
+    echo "Must provide version to prepare release" 1>&2
+    exit 1
+fi
+mkdir -p releases
+
+# Manual build release based on Terraform docs.
+prepare_release() {
+for os in ${oses[@]}
+do
+  for arch in ${archs[@]}
+  do
+    if [[ $os == "windows" ]]; then
+        extension=".exe"
+    fi
+    GOOS=${os} GOARCH=${arch} go build -ldflags="${ldflags}" -o /tmp/terraform-provider-rhcs_${os}_${arch}
+    mv /tmp/terraform-provider-rhcs_${os}_${arch} terraform-provider-rhcs_v${REL_VER}${extension}
+    zip releases/terraform-provider-rhcs_${REL_VER}_${os}_${arch}.zip CHANGELOG.md LICENSE README.md terraform-provider-rhcs_v${REL_VER}${extension}
+    rm terraform-provider-rhcs_v${REL_VER}${extension}
+    cp terraform-registry-manifest.json releases/terraform-provider-rhcs_${REL_VER}_manifest.json
+  done
+done
+sha256sum releases/*zip releases/terraform-provider-rhcs_${REL_VER}_manifest.json > releases/terraform-provider-rhcs_${REL_VER}_SHA256SUMS
+}
+
+prepare_release