Release v27.0.0-rc.2 · moby/moby

27.0.0-rc.2

For a full list of pull requests and changes in this release, refer to the relevant GitHub milestones:

In port mappings with no host port specified, and with host port ranges, allocate the same port for IPv4 and IPv6. Add bridge driver option com.docker.network.bridge.gateway_mode_ipv6=<nat|routed>, when set to routed no NAT or masquerading rules are configured for port mappings.
This enables direct IPv6 access to the container, if the host's network can route packets for the container's address to the host. Mapped ports will be opened in the containers firewall. For example, docker network create --ipv6 -o com.docker.network.bridge.gateway_mode_ipv6=routed mynet. Option com.docker.network.bridge.gateway_mode_ipv4=<nat|routed> is also available. moby/moby#47871

Fix a goroutine and file-descriptor leak on container attach. moby/moby#45052
Clear the networking state of all stopped or dead containers during daemon start-up. moby/moby#47984
Environment variable DOCKER_ALLOW_IPV6_ON_IPV4_INTERFACE, introduced in release 26.1.1, no longer has any effect. If IPv6 could not be disabled on an interface because of a read-only /proc/sys/net, the environment variable allowed the container to start anyway.
IPv6 can now be explicitly enabled simply by using --ipv6 when creating the network, it is no longer necessary to allocate a subnet as a unique-local prefix will be selected by default. Other workarounds are to configure the OS to disable IPv6 by default on new interfaces, mount /proc/sys/net read-write, or use a kernel with no IPv6 support. moby/moby#47963

pkg/archive: deprecate NewTempArchive, TempArchive. These types were only used in tests and will be removed in the next release. moby/moby#48002
pkg/archive: deprecate CanonicalTarNameForPath moby/moby#48001
Deprecate pkg/dmesg. This package was no longer used, and will be removed in the next release. moby/moby#47999
Deprecate pkg/stringid.ValidateID and pkg/stringid.IsShortID moby/moby#47995
runconfig: deprecate SetDefaultNetModeIfBlank and move ContainerConfigWrapper to api/types/container moby/moby#48007

POST /containers/create and POST /services/create now take Options as part of HostConfig.Mounts.TmpfsOptions allowing to set options for tmpfs mounts. moby/moby#46809
The Healthcheck.StartInterval property is now correctly ignored when updating a Swarm service using API versions less than v1.44. moby/moby#47991
GET /events now supports image create event that is emitted when a new image is built regardless if it was tagged or not. moby/moby#47929
GET /info now includes a Containerd field containing information about the location of the containerd API socket and containerd namespaces used by the daemon to run containers and plugins. moby/moby#47239