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4th chunk of `content/manuals/engine/release-notes/18.03.md`
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* Update runc to 6c55f98695e902427906eed2c799e566e3d3dfb5 [moby/moby#36222](https://github.com/moby/moby/pull/36222)
- Fix container cleanup on daemon restart [moby/moby#36249](https://github.com/moby/moby/pull/36249)
* Support SCTP port mapping (bump up API to v1.37) [moby/moby#33922](https://github.com/moby/moby/pull/33922)
* Support SCTP port mapping [docker/cli#278](https://github.com/docker/cli/pull/278)
- Fix Volumes property definition in ContainerConfig [moby/moby#35946](https://github.com/moby/moby/pull/35946)
* Bump moby and dependencies [docker/cli#829](https://github.com/docker/cli/pull/829)
* C.RWLayer: check for nil before use [moby/moby#36242](https://github.com/moby/moby/pull/36242)
+ Add `REMOVE` and `ORPHANED` to TaskState [moby/moby#36146](https://github.com/moby/moby/pull/36146)
- Fixed error detection using `IsErrNotFound` and `IsErrNotImplemented` for `ContainerStatPath`, `CopyFromContainer`, and `CopyToContainer` methods [moby/moby#35979](https://github.com/moby/moby/pull/35979)
+ Add an integration/internal/container helper package [moby/moby#36266](https://github.com/moby/moby/pull/36266)
+ Add canonical import path [moby/moby#36194](https://github.com/moby/moby/pull/36194)
+ Add/use container.Exec() to integration [moby/moby#36326](https://github.com/moby/moby/pull/36326)
- Fix "--node-generic-resource" singular/plural [moby/moby#36125](https://github.com/moby/moby/pull/36125)
* Daemon.cleanupContainer: nullify container RWLayer upon release [moby/moby#36160](https://github.com/moby/moby/pull/36160)
* Daemon: passdown the `--oom-kill-disable` option to containerd [moby/moby#36201](https://github.com/moby/moby/pull/36201)
* Display a warn message when there is binding ports and net mode is host [moby/moby#35510](https://github.com/moby/moby/pull/35510)
* Refresh containerd remotes on containerd restarted [moby/moby#36173](https://github.com/moby/moby/pull/36173)
* Set daemon root to use shared propagation [moby/moby#36096](https://github.com/moby/moby/pull/36096)
* Optimizations for recursive unmount [moby/moby#34379](https://github.com/moby/moby/pull/34379)
* Perform plugin mounts in the runtime [moby/moby#35829](https://github.com/moby/moby/pull/35829)
* Graphdriver: Fix RefCounter memory leak [moby/moby#36256](https://github.com/moby/moby/pull/36256)
* Use continuity fs package for volume copy [moby/moby#36290](https://github.com/moby/moby/pull/36290)
Title: Docker Engine 18.03.0-ce Runtime Enhancements and Bug Fixes
Summary
This text details several enhancements and bug fixes related to the Docker Engine runtime. It includes updates to runc, fixes for container cleanup and volume property definitions, and the addition of SCTP port mapping support. The updates also feature improvements in error detection, the addition of a container helper package, and fixes for node generic resource handling. Furthermore, it covers enhancements to daemon functionality, such as passing down the `--oom-kill-disable` option to containerd, refreshing containerd remotes, and optimizations for recursive unmount operations. It also addresses a memory leak in the Graphdriver and utilizes a continuity fs package for volume copying.