Docker Engine 23.0.0: Feature Removals, Deprecations, and Upgrades

- [Deprecation notice](../deprecated.md#backing-filesystem-without-d_type-support-for-overlayoverlay2) - Remove the deprecated `overrideKernelCheck` option from the `overlay2` storage driver. [moby/moby#44279](https://github.com/moby/moby/pull/44279) [Deprecation notice](../deprecated.md#support-for-the-overlay2override_kernel_check-storage-option) - Remove support for the deprecated `io.containerd.runtime.v1.linux` OCI runtime. [moby/moby#43695](https://github.com/moby/moby/pull/43695) - Remove LCOW (Linux Containers on Windows). [moby/moby#42451](https://github.com/moby/moby/pull/42451), [moby/moby#42499](https://github.com/moby/moby/pull/42499), [moby/moby#42506](https://github.com/moby/moby/pull/42506), [moby/moby#42511](https://github.com/moby/moby/pull/42511), [moby/moby#42520](https://github.com/moby/moby/pull/42520), [moby/moby#42683](https://github.com/moby/moby/pull/42683), [moby/moby#42684](https://github.com/moby/moby/pull/42684), [moby/moby#42685](https://github.com/moby/moby/pull/42685), [moby/moby#43187](https://github.com/moby/moby/pull/43187) - LCOW was introduced as a technical preview in 17.09 and deprecated in 20.10. - [Deprecation notice](../deprecated.md#linux-containers-on-windows-lcow-experimental) - Remove daemon options related to legacy overlay networks used with standalone Swarm. - Remove `--cluster-xx` options from `dockerd`. [moby/moby#40383](https://github.com/moby/moby/issues/40383) - Remove `host-discovery` and overlay networks with external k/v stores. [moby/moby#42247](https://github.com/moby/moby/pull/42247) - [Deprecation notice](../deprecated.md#classic-swarm-and-overlay-networks-using-cluster-store) - Remove a deprecated `arm` platform fallback. `--platform linux/arm/vY` will now return a error when `arm/vY` isn't available instead of pulling the wrong image. [moby/moby#44414](https://github.com/moby/moby/pull/44414) - Remove the deprecated `SetCustomHTTPHeaders()`, `CustomHTTPHeaders()` options-setters from the Go client API. [moby/moby#42694](https://github.com/moby/moby/pull/42694) - Remove the deprecated `WithDialer()` option-setter from the Go client API. [moby/moby#44022](https://github.com/moby/moby/pull/44022) - Use `WithDialContext()` instead. - Remove the daemon implementation of `opts.QuotedString`. The implementation has moved to the CLI. [moby/moby#43250](https://github.com/moby/moby/pull/43250) - Remove separate daemon ID from trust-key in the daemon, and disable generating the trust-key. [moby/moby#43555](https://github.com/moby/moby/pull/43555) - API: Remove the deprecated `KernelMemory` option from `POST /containers/create` on API version >= 1.42. [moby/moby#43214](https://github.com/moby/moby/pull/43214) - [Deprecation notice](../deprecated.md#kernel-memory-limit) ### Deprecated - Require Windows Server RS5 / LTSC 2019 (build 17763) as the minimum to run the daemon. [moby/moby#43254](https://github.com/moby/moby/pull/43254) - Deprecate `BuilderSize` on API version >= 1.42. [moby/moby#42608](https://github.com/moby/moby/pull/42608) - Deprecate `BuildCache.Parent` in favor of the newly introduced `BuildCache.Parents` on API version >= 1.42. [moby/moby#43908](https://github.com/moby/moby/pull/43908) - Deprecate `pkg/urlutil`, moving the implementation to `builder/remotecontext/urlutil`. [moby/moby#43477](https://github.com/moby/moby/pull/43477) ### Upgrades - Upgrade Go to `1.19.5`. [docker/cli#3958](https://github.com/docker/cli/pull/3958), [moby/moby#44794](https://github.com/moby/moby/pull/44794) - Upgrade `rootlesskit` to `v0.14.4`. [moby/moby#42708](https://github.com/moby/moby/pull/42708) - Upgrade `buildkit` to `v0.10.6`. [moby/moby#43239](https://github.com/moby/moby/pull/43239) - Upgrade `buildx` to `v0.10.2`. [docker/docker-ce-packaging#840](https://github.com/docker/docker-ce-packaging/pull/840) - Upgrade `swarmkit` to `v2.0.0-20230119195359-904c221ac281`. [moby/moby#44858](https://github.com/moby/moby/pull/44858) - Upgrade `containerd` to `v1.6.16`. [moby/moby#44766](https://github.com/moby/moby/pull/44766), [moby/moby#44769](https://github.com/moby/moby/pull/44769), [moby/moby#44881](https://github.com/moby/moby/pull/44881)

This section outlines features removed from Docker Engine 23.0.0, including deprecated options for overlay2 storage driver, OCI runtime support, LCOW (Linux Containers on Windows), legacy overlay network daemon options, arm platform fallback, Go client API options, and daemon implementation of opts.QuotedString. Additionally, it covers deprecations like minimum Windows Server version requirement and API elements. Finally, it lists upgrades to Go, rootlesskit, buildkit, buildx, swarmkit, and containerd.