First commit

.circleci/config.yml

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+version: 2.1
+
+orbs:
+  ivy-circleci-orb: nxtlytics/[email protected]
+
+workflows:
+  version: 2
+  build:
+    jobs:
+      - ivy-circleci-orb/build_docker:
+          name: ivy-coredns
+          simple_docker_tag: true
+          context: ivy
+          filters:
+            branches:
+              ignore:
+                - /.*/
+            tags:
+              only: /^v.*/

Dockerfile

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+FROM golang:1.17.5-stretch
+
+ARG coredns_version=1.8.6
+ARG plugin_name=kubenodes
+ARG plugin_repo=github.com/chrisohaver/kubenodes
+
+RUN go mod download github.com/coredns/coredns@v${coredns_version}
+
+WORKDIR $GOPATH/pkg/mod/github.com/coredns/coredns@v${coredns_version}
+RUN go mod download
+
+RUN sed -i "/kubernetes/i ${plugin_name}:${plugin_repo}" plugin.cfg
+RUN go get ${plugin_repo}
+RUN make coredns
+RUN mv coredns /tmp/coredns
+
+FROM scratch
+
+COPY --from=0 /etc/ssl/certs /etc/ssl/certs
+COPY --from=0 /tmp/coredns /coredns
+
+EXPOSE 53 53/udp
+ENTRYPOINT ["/coredns"]

readme.md

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+# ivy-coredns
+
+This is a customized packaging of CoreDNS to include some plugins we find useful.
+
+See the `Dockerfile` for more information about what has been changed.