diff --git a/coredns/1.7.0/21.09/Dockerfile b/coredns/1.7.0/21.09/Dockerfile
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index 0000000000000000000000000000000000000000..8c89ebc6601a9682219e576b274b208687150caa
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+++ b/coredns/1.7.0/21.09/Dockerfile
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+FROM openeuler/openeuler:21.09
+
+RUN yum -y update && yum clean all
+RUN yum -y install coredns ca-certificates && yum clean all
+
+EXPOSE 53 53/udp
+ENTRYPOINT ["/sbin/coredns"]
diff --git a/coredns/README.md b/coredns/README.md
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+# CoreDNS
+
+# Quick reference
+
+- The official CoreDNS docker image.
+
+- Maintained by: [openEuler CloudNative SIG](https://gitee.com/openeuler/cloudnative)
+
+- Where to get help: [openEuler CloudNative SIG](https://gitee.com/openeuler/cloudnative), [openEuler](https://gitee.com/openeuler/community)
+
+# Build reference
+
+1. Build images and push:
+```shell
+docker buildx build -t "openeuler/coredns:$VERSION" --platform linux/amd64,linux/arm64 . --push
+```
+
+We are using `buildx` in here to generate multi-arch images, see more in [Docker Buildx](https://docs.docker.com/buildx/working-with-buildx/)
+
+2. Run:
+```shell
+docker run -ti openeuler/coredns:1.7.0-21.09
+```
+
+# Supported tags and respective Dockerfile links
+
+- 1.7.0-21.09: coredns v1.7.0, openEuler 21.09
+
+## Operating System
+Linux/Unix, ARM64 or x86-64 architecture.
+