Update release notes with removed Docker versions

kubernetes · Apr 6, 2020 · 1389510 · 1389510
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diff --git a/docs/releases/1.16-NOTES.md b/docs/releases/1.16-NOTES.md
@@ -2,6 +2,8 @@
 
 # Breaking changes
 
+* Support for Docker versions 1.11, 1.12 and 1.13 has been removed because of the [dockerproject.org shut down](https://www.docker.com/blog/changes-dockerproject-org-apt-yum-repositories/). Those affected must upgrade to a newer Docker version.
+
 * Please see the notes in the 1.15 release about the apiGroup changing from kops
   to kops.k8s.io
 

diff --git a/docs/releases/1.17-NOTES.md b/docs/releases/1.17-NOTES.md
@@ -9,6 +9,8 @@ the notes prior to the release).
 
 # Breaking changes
 
+* Support for Docker versions 1.11, 1.12 and 1.13 has been removed because of the [dockerproject.org shut down](https://www.docker.com/blog/changes-dockerproject-org-apt-yum-repositories/). Those affected must upgrade to a newer Docker version.
+
 * Terraform users on AWS may need to rename some resources in their state file in order to prepare for future Terraform 0.12 support. See Required Actions below.
 
 * Please see the notes in the 1.15 release about the apiGroup changing from kops

diff --git a/docs/releases/1.18-NOTES.md b/docs/releases/1.18-NOTES.md
@@ -14,6 +14,8 @@
 
 # Breaking changes
 
+* Support for Docker versions 1.11, 1.12 and 1.13 has been removed because of the [dockerproject.org shut down](https://www.docker.com/blog/changes-dockerproject-org-apt-yum-repositories/). Those affected must upgrade to a newer Docker version.
+
 * Terraform users on AWS may need to rename some resources in their state file in order to prepare for Terraform 0.12 support. See Required Actions below.
 
 * The Docker `health-check` service is now disabled by default. It shouldn't be needed anymore, but it can still be enabled by setting `spec.docker.healthCheck: true`. It is recommended to also check [node-problem-detector](https://github.com/kubernetes/node-problem-detector) and [draino](https://github.com/planetlabs/draino) as replacements. See Required Actions below.