Dockerfile to create MUO image

Dockerfile.muo

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+FROM registry.access.redhat.com/ubi8/go-toolset:1.16.12 AS builder
+ARG MUOVERSION
+ENV DOWNLOAD_URL=https://github.com/openshift/managed-upgrade-operator/archive/${MUOVERSION}.tar.gz
+ENV GOOS=linux \
+    GOPATH=/go/ \
+    GOARCH=amd64 \
+    CGO_ENABLED=0
+WORKDIR ${GOPATH}/src/github.com/openshift/managed-upgrade-operator
+USER root
+RUN yum update -yq
+RUN curl -Lq $DOWNLOAD_URL | tar -xz --strip-components=1
+RUN go build -gcflags="all=-trimpath=/go/" -asmflags="all=-trimpath=/go/" -tags mandate_fips -o build/_output/bin/managed-upgrade-operator ./cmd/manager
+
+#### Runtime container
+FROM registry.access.redhat.com/ubi8/ubi-minimal:latest
+
+ENV USER_UID=1001 \
+    USER_NAME=managed-upgrade-operator
+
+RUN microdnf update && microdnf clean all
+COPY --from=builder /go/src/github.com/openshift/managed-upgrade-operator/build/_output/bin/* \
+                    /go/src/github.com/openshift/managed-upgrade-operator/build/bin/* \
+                    /usr/local/bin/
+RUN /usr/local/bin/user_setup
+
+ENTRYPOINT ["/usr/local/bin/entrypoint"]
+USER ${USER_UID}
+LABEL io.openshift.managed.name="managed-upgrade-operator" \
+      io.openshift.managed.description="Operator to manage upgrades for Openshift version 4 clusters"