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containerd 1.5.1

Welcome to the v1.5.1 release of containerd!

The first patch release for containerd 1.5 includes an updated version
of runc and minor fix in the CRI service

### Notable Updates

* **Update runc to rc94** [#5473](https://github.com/containerd/containerd/pull/5473)
* **Fix registry mirror authorization logic in CRI plugin** [#5446](https://github.com/containerd/containerd/pull/5446)
* **Fix regression in cri-cni-release to include cri tools** [#5462](https://github.com/containerd/containerd/pull/5462)

See the changelog for complete list of changes

Please try out the release binaries and report any issues at
https://github.com/containerd/containerd/issues.

### Contributors

* Derek McGowan
* Mike Brown
* Akihiro Suda
* Phil Estes
* Sebastiaan van Stijn
* Davanum Srinivas
* Enrico Weigelt, metux IT consult
* Jintao Zhang
* Lantao Liu

### Changes
<details><summary>21 commits</summary>
<p>

* [`12dca9790`](https://github.com/containerd/containerd/commit/12dca9790f4cb6b18a6a7a027ce420145cb98ee7) Merge pull request  [#5495](https://github.com/containerd/containerd/pull/5495) from dmcgowan/prepare-1.5.1
* [`c31e19abb`](https://github.com/containerd/containerd/commit/c31e19abb7b2f534262ddbc635a5a89b3637b841) Prepare release notes for v1.5.1
* [`38deeccac`](https://github.com/containerd/containerd/commit/38deeccac89ad468de8ef9cc60edf7a39ed9d501) Merge pull request  [#5501](https://github.com/containerd/containerd/pull/5501) from dmcgowan/backport-imgcrypt-binary-release-update
* [`47507a6e1`](https://github.com/containerd/containerd/commit/47507a6e178489833bf37f515e9ed3970940a35d) just release ctd-decoder not ctr-enc
* [`799eef87c`](https://github.com/containerd/containerd/commit/799eef87c6c55409d9fbc7b251f4059162f74d38) Merge pull request  [#5500](https://github.com/containerd/containerd/pull/5500) from dmcgowan/1.5-backport-integration-pin-image
* [`109d65794`](https://github.com/containerd/containerd/commit/109d65794e2b422ba9e59d5d01d5fb1bc2a71682) Pin integration test image for alpine
* [`07bde83ef`](https://github.com/containerd/containerd/commit/07bde83ef2eafb9be35d622db0e709e752791639) Merge pull request  [#5494](https://github.com/containerd/containerd/pull/5494) from dmcgowan/backport-1.5-host-documentation
* [`042e49fe1`](https://github.com/containerd/containerd/commit/042e49fe18aa5351498ddd29dee29c8a371579d3) adds credentials description
* [`aeee09344`](https://github.com/containerd/containerd/commit/aeee0934435ebd8b0a14a2db1f776138c53b353f) adds description for hosts.toml
* [`eebc91450`](https://github.com/containerd/containerd/commit/eebc91450f9a1aec960bfed44ad7383eeea05680) Merge pull request  [#5447](https://github.com/containerd/containerd/pull/5447) from Random-Liu/cherrypick-#5446-release-1.5
* [`5e742ea04`](https://github.com/containerd/containerd/commit/5e742ea04b8266db15e97ea4e7c2d35330b6416a) Fix different registry hosts referencing the same auth config.
* [`b60331a92`](https://github.com/containerd/containerd/commit/b60331a92d9c1ba601a9d33dc69e8b42bebd27d5) Merge pull request  [#5483](https://github.com/containerd/containerd/pull/5483) from thaJeztah/1.5_backport_bump_runc
* [`384b05a5a`](https://github.com/containerd/containerd/commit/384b05a5aeee8f9c0c6268bc4280435c481fbfd6) Update the runc binary used with containerd to runc v1.0.0-rc94
* [`423cd4006`](https://github.com/containerd/containerd/commit/423cd400616ed234ab0ff0b8b4e087d6e8c6cddc) Merge pull request  [#5474](https://github.com/containerd/containerd/pull/5474) from dmcgowan/1.5-cherry-pick-build-updates
* [`3a8611039`](https://github.com/containerd/containerd/commit/3a861103933bd4efe88ce124a14a7f68988b3a67) Update Go to 1.16.4
* [`50d371ea7`](https://github.com/containerd/containerd/commit/50d371ea7bb961e1ee72019b8cdea37ee406bb6a) Makefile: allow overriding go command by environment
* [`c48044f6d`](https://github.com/containerd/containerd/commit/c48044f6d83f07944580077f821b16013b8554f9) Merge pull request  [#5471](https://github.com/containerd/containerd/pull/5471) from mikebrow/1.5_cherrypick_correct-critools-release
* [`7783f5893`](https://github.com/containerd/containerd/commit/7783f5893aa9d7cc7900f6e8f0e27b6e411a78e1) update to new cri-tools make install
* [`7507b47c3`](https://github.com/containerd/containerd/commit/7507b47c3678b22f9e266a69aa1aa3b90749022b) Merge pull request  [#5457](https://github.com/containerd/containerd/pull/5457) from thaJeztah/1.5_backport_dont_loop_da_loop
* [`b35aa7250`](https://github.com/containerd/containerd/commit/b35aa7250a2a3f226b3fa09ccc950944a70ca33c) go.mod: cut circular dependency on github.com/containerd/containerd
* [`b68405639`](https://github.com/containerd/containerd/commit/b684056399651a8219e9c60a6c39bacfc88ae741) integration/client: go mod tidy
</p>
</details>

### Dependency Changes

* **github.com/satori/go.uuid**  v1.2.0 **_new_**

Previous release can be found at [v1.5.0](https://github.com/containerd/containerd/releases/tag/v1.5.0)