Exmaple empty operator

.dockerignore

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+# More info: https://docs.docker.com/engine/reference/builder/#dockerignore-file
+# Ignore build and test binaries.
+bin/

.gitignore

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+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+bin/*
+Dockerfile.cross
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Go workspace file
+go.work
+go.work.sum
+# Kubernetes Generated files - skip generated files, except for vendored files
+!vendor/**/zz_generated.*
+
+#Operator SDK generated files
+/bundle/
+bundle.Dockerfile
+config/manager/kustomization.yaml
+
+# Common CI tools repository
+CI_TOOLS_REPO
+
+# editor and IDE paraphernalia
+.idea
+.vscode
+*.swp
+*.swo
+*~

.golangci.yml

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+run:
+  timeout: 5m
+  allow-parallel-runners: true
+
+issues:
+  # don't skip warning about doc comments
+  # don't exclude the default set of lint
+  exclude-use-default: false
+  # restore some of the defaults
+  # (fill in the rest as needed)
+  exclude-rules:
+    - path: "api/*"
+      linters:
+        - lll
+    - path: "internal/*"
+      linters:
+        - dupl
+        - lll
+linters:
+  disable-all: true
+  enable:
+    - dupl
+    - errcheck
+    - exportloopref
+    - goconst
+    - gocyclo
+    - gofmt
+    - goimports
+    - gosimple
+    - govet
+    - ineffassign
+    - lll
+    - misspell
+    - nakedret
+    - prealloc
+    - staticcheck
+    - typecheck
+    - unconvert
+    - unparam
+    - unused

Dockerfile

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+ARG GOLANG_BUILDER=registry.access.redhat.com/ubi9/go-toolset:1.21
+ARG OPERATOR_BASE_IMAGE=registry.access.redhat.com/ubi9/ubi-minimal:latest
+
+# Build the manager binary
+FROM $GOLANG_BUILDER AS builder
+
+#Arguments required by OSBS build system
+ARG CACHITO_ENV_FILE=/remote-source/cachito.env
+ARG REMOTE_SOURCE=.
+ARG REMOTE_SOURCE_DIR=/remote-source
+ARG REMOTE_SOURCE_SUBDIR=
+ARG DEST_ROOT=/dest-root
+ARG GO_BUILD_EXTRA_ARGS="-tags strictfipsruntime"
+ARG GO_BUILD_EXTRA_ENV_ARGS="CGO_ENABLED=1 GO111MODULE=on"
+
+COPY $REMOTE_SOURCE $REMOTE_SOURCE_DIR
+WORKDIR $REMOTE_SOURCE_DIR/$REMOTE_SOURCE_SUBDIR
+USER root
+RUN mkdir -p ${DEST_ROOT}/usr/local/bin/
+
+# 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 if [ ! -f $CACHITO_ENV_FILE ]; then go mod download ; fi
+
+# Build manager
+RUN if [ -f $CACHITO_ENV_FILE ] ; then source $CACHITO_ENV_FILE ; fi ; env ${GO_BUILD_EXTRA_ENV_ARGS} go build ${GO_BUILD_EXTRA_ARGS} -a -o ${DEST_ROOT}/manager main.go
+
+
+RUN cp -r templates ${DEST_ROOT}/templates
+
+# Use distroless as minimal base image to package the manager binary
+# Refer to https://github.com/GoogleContainerTools/distroless for more details
+FROM $OPERATOR_BASE_IMAGE
+
+ARG DEST_ROOT=/dest-root
+# NONROOT default id https://github.com/GoogleContainerTools/distroless/blob/main/base/base.bzl#L8=
+ARG USER_ID=65532
+
+ARG IMAGE_COMPONENT="watcher-operator-container"
+ARG IMAGE_NAME="watcher-operator"
+ARG IMAGE_VERSION="1.0.0"
+ARG IMAGE_SUMMARY="Watcher Operator"
+ARG IMAGE_DESC="This image includes the watcher-operator"
+ARG IMAGE_TAGS="cn-openstack openstack"
+
+### DO NOT EDIT LINES BELOW
+# Auto generated using CI tools from
+# https://github.com/openstack-k8s-operators/openstack-k8s-operators-ci
+
+# Labels required by upstream and osbs build system
+LABEL com.redhat.component="${IMAGE_COMPONENT}" \
+	name="${IMAGE_NAME}" \
+	version="${IMAGE_VERSION}" \
+	summary="${IMAGE_SUMMARY}" \
+	io.k8s.name="${IMAGE_NAME}" \
+	io.k8s.description="${IMAGE_DESC}" \
+	io.openshift.tags="${IMAGE_TAGS}"
+### DO NOT EDIT LINES ABOVE
+
+ENV USER_UID=$USER_ID \
+	OPERATOR_TEMPLATES=/usr/share/watcher-operator/templates/
+
+WORKDIR /
+
+# Install operator binary to WORKDIR
+COPY --from=builder ${DEST_ROOT}/manager .
+
+# Install templates
+COPY --from=builder ${DEST_ROOT}/templates ${OPERATOR_TEMPLATES}
+
+USER $USER_ID
+
+ENV PATH="/:${PATH}"
+
+ENTRYPOINT ["/manager"]