chore: publish ubi based image

- added publish step to publish ubi image
- updated base image for alpine based dockerfile

.github/workflows/publish.yml

@@ -12,7 +12,7 @@ env:
 jobs:
   publish:
     name: Publish
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
       - name: Check Out Repo
         uses: actions/checkout@v3
@@ -49,7 +49,7 @@ jobs:
 
       - name: Build and push - Docker/ECR
         id: docker_build
-        uses: docker/build-push-action@v3
+        uses: docker/build-push-action@v4
         with:
           context: .
           platforms: linux/amd64,linux/arm64,linux/ppc64le,linux/s390x
@@ -64,5 +64,22 @@ jobs:
             public.ecr.aws/${{ env.ALIAS }}/${{ env.REP }}:latest
           cache-from: type=local,src=/tmp/.buildx-cache/release
           cache-to: type=local,mode=max,dest=/tmp/.buildx-cache/release
+
+      - name: Build and push ubi image - Docker/ECR
+        id: docker_build_ubi
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64,linux/ppc64le,linux/s390x
+          builder: ${{ steps.buildx.outputs.name }}
+          push: true
+          file: Dockerfile.ubi
+          build-args: |
+            KUBEBENCH_VERSION=${{ steps.get_version.outputs.version }}
+          tags: |
+            ${{ env.DOCKERHUB_ALIAS }}/${{ env.REP }}:${{ steps.get_version.outputs.version }}-ubi
+            public.ecr.aws/${{ env.ALIAS }}/${{ env.REP }}:${{ steps.get_version.outputs.version }}-ubi
+          cache-from: type=local,src=/tmp/.buildx-cache/release
+          cache-to: type=local,mode=max,dest=/tmp/.buildx-cache/release
       - name: Image digest
         run: echo ${{ steps.docker_build.outputs.digest }}

Dockerfile

@@ -9,7 +9,7 @@ COPY internal/ internal/
 ARG KUBEBENCH_VERSION
 RUN make build && cp kube-bench /go/bin/kube-bench
 
-FROM alpine:3.17.0 AS run
+FROM alpine:3.17 AS run
 WORKDIR /opt/kube-bench/
 # add GNU ps for -C, -o cmd, and --no-headers support
 # https://github.com/aquasecurity/kube-bench/issues/109

Dockerfile.ubi

@@ -11,9 +11,9 @@ RUN make build && cp kube-bench /go/bin/kube-bench
 
 
 # ubi8-minimal base image for build with ubi standards
-FROM registry.access.redhat.com/ubi8/ubi-minimal:8.7 as run
+FROM registry.access.redhat.com/ubi8/ubi-minimal as run
 
-RUN microdnf install yum findutils openssl\
+RUN microdnf install -y yum findutils openssl \
   && yum -y update-minimal --security --sec-severity=Moderate --sec-severity=Important --sec-severity=Critical \
   && yum update -y \
   && yum install -y glibc \

makefile

@@ -4,6 +4,7 @@ DOCKER_ORG ?= aquasec
 VERSION ?= $(shell git rev-parse --short=7 HEAD)
 KUBEBENCH_VERSION ?= $(shell git describe --tags --abbrev=0)
 IMAGE_NAME ?= $(DOCKER_ORG)/$(BINARY):$(VERSION)
+IMAGE_NAME_UBI ?= $(DOCKER_ORG)/$(BINARY):$(VERSION)-ubi
 GOOS ?= linux
 BUILD_OS := linux
 uname := $(shell uname -s)
@@ -45,6 +46,12 @@ build-docker:
 			 --build-arg KUBEBENCH_VERSION=$(KUBEBENCH_VERSION) \
              -t $(IMAGE_NAME) .
 
+build-docker-ubi:
+	docker build -f Dockerfile.ubi --build-arg BUILD_DATE=$(shell date -u +"%Y-%m-%dT%H:%M:%SZ") \
+             --build-arg VCS_REF=$(VERSION) \
+			 --build-arg KUBEBENCH_VERSION=$(KUBEBENCH_VERSION) \
+             -t $(IMAGE_NAME_UBI) .
+
 # unit tests
 tests:
 	GO111MODULE=on go test -vet all -short -race -timeout 30s -coverprofile=coverage.txt -covermode=atomic ./...