adding ubuntu,ubi dockerfile

Signed-off-by: Vivek Reddy <vivekr@splunk.com>

Dockerfile.ubi

@@ -0,0 +1,64 @@
+# Build the manager binary
+FROM --platform=${BUILDPLATFORM:-linux/amd64}  golang:1.21.1 as builder
+
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+ARG TARGETOS
+ARG TARGETARCH
+
+WORKDIR /workspace
+# Copy the Go Modules manifests
+COPY go.mod go.mod
+COPY go.sum go.sum
+# cache deps before building and copying source so that we don't need to re-download as much
+# and so that source changes don't invalidate our downloaded layer
+RUN go mod download
+
+# Copy the go source
+COPY main.go main.go
+COPY api/ api/
+COPY controllers/ controllers/
+COPY pkg/ pkg/
+COPY tools/ tools/
+COPY hack hack/
+
+# Build
+RUN CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -a -o manager main.go
+
+# Use distroless as minimal base image to package the manager binary
+# Refer to https://github.com/GoogleContainerTools/distroless for more details
+FROM redhat/ubi8:latest
+
+ENV OPERATOR=/manager \
+    USER_UID=1001 \
+    USER_NAME=nonroot
+
+RUN yum -y install shadow-utils
+RUN useradd -ms /bin/bash nonroot -u 1001
+RUN yum update -y krb5-libs && yum clean all
+RUN yum -y update-minimal --security --sec-severity=Important --sec-severity=Critical
+RUN yum -y update-minimal --security --sec-severity=Moderate
+RUN yum -y update-minimal --security --sec-severity=Low
+
+LABEL name="splunk" \
+      maintainer="support@splunk.com" \
+      vendor="splunk" \
+      version="2.2.1" \
+      release="1" \
+      summary="Simplify the Deployment & Management of Splunk Products on Kubernetes" \
+      description="The Splunk Operator for Kubernetes (SOK) makes it easy for Splunk Administrators to deploy and operate Enterprise deployments in a Kubernetes infrastructure. Packaged as a container, it uses the operator pattern to manage Splunk-specific custom resources, following best practices to manage all the underlying Kubernetes objects for you."
+
+WORKDIR /
+RUN mkdir /licenses
+RUN mkdir -p /tools/k8_probes
+
+COPY --from=builder /workspace/manager .
+COPY tools/EULA_Red_Hat_Universal_Base_Image_English_20190422.pdf /licenses
+COPY LICENSE /licenses/LICENSE-2.0.txt
+COPY tools/k8_probes/livenessProbe.sh /tools/k8_probes/
+COPY tools/k8_probes/readinessProbe.sh /tools/k8_probes/
+COPY tools/k8_probes/startupProbe.sh /tools/k8_probes/
+
+USER 1001
+
+ENTRYPOINT ["/manager"]

Dockerfile.ubuntu

@@ -0,0 +1,62 @@
+# Build the manager binary
+FROM --platform=${BUILDPLATFORM:-linux/amd64}  golang:1.21.1 as builder
+
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+ARG TARGETOS
+ARG TARGETARCH
+
+WORKDIR /workspace
+# Copy the Go Modules manifests
+COPY go.mod go.mod
+COPY go.sum go.sum
+# cache deps before building and copying source so that we don't need to re-download as much
+# and so that source changes don't invalidate our downloaded layer
+RUN go mod download
+
+# Copy the go source
+COPY main.go main.go
+COPY api/ api/
+COPY controllers/ controllers/
+COPY pkg/ pkg/
+COPY tools/ tools/
+COPY hack hack/
+
+# Build
+RUN CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -a -o manager main.go
+
+# Use distroless as minimal base image to package the manager binary
+# Refer to https://github.com/GoogleContainerTools/distroless for more details
+FROM ubuntu:23.10
+
+ENV OPERATOR=/manager \
+    USER_UID=1001 \
+    USER_NAME=nonroot
+
+RUN yum -y install shadow-utils
+RUN useradd -ms /bin/bash nonroot -u 1001
+RUN apt-get install krb5-user
+RUN unattended-upgrade -d
+
+LABEL name="splunk" \
+      maintainer="support@splunk.com" \
+      vendor="splunk" \
+      version="2.2.1" \
+      release="1" \
+      summary="Simplify the Deployment & Management of Splunk Products on Kubernetes" \
+      description="The Splunk Operator for Kubernetes (SOK) makes it easy for Splunk Administrators to deploy and operate Enterprise deployments in a Kubernetes infrastructure. Packaged as a container, it uses the operator pattern to manage Splunk-specific custom resources, following best practices to manage all the underlying Kubernetes objects for you."
+
+WORKDIR /
+RUN mkdir /licenses
+RUN mkdir -p /tools/k8_probes
+
+COPY --from=builder /workspace/manager .
+COPY tools/EULA_Red_Hat_Universal_Base_Image_English_20190422.pdf /licenses
+COPY LICENSE /licenses/LICENSE-2.0.txt
+COPY tools/k8_probes/livenessProbe.sh /tools/k8_probes/
+COPY tools/k8_probes/readinessProbe.sh /tools/k8_probes/
+COPY tools/k8_probes/startupProbe.sh /tools/k8_probes/
+
+USER 1001
+
+ENTRYPOINT ["/manager"]