incus: add container host profile

Add CONTAINER_PROFILE=incus support so incus can be selected as the
container engine for container-image-host:

  require conf/distro/include/container-host-incus.conf
  MACHINE = "qemux86-64"
  bitbake container-image-host

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>

1 files changed, 93 insertions, 0 deletions

diff --git a/recipes-containers/incus/README.md b/recipes-containers/incus/README.md
new file mode 100644
index 00000000..c3e3a2ce
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+++ b/recipes-containers/incus/README.md
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+# Incus: System Container and VM Manager
+
+[Incus](https://linuxcontainers.org/incus/) is the community fork of LXD,
+providing a unified experience for running and managing system containers
+and virtual machines. Built on LXC 6.0 with cowsql for distributed cluster state.
+
+## Quick Start
+
+### Build
+
+Select the incus profile in your `local.conf`:
+
+```
+BUILD_PROFILE ?= "incus"
+```
+
+Or append incus to an existing image:
+
+```
+IMAGE_INSTALL:append:pn-container-image-host = " incus"
+```
+
+Then build:
+
+```shell
+bitbake container-image-host
+```
+
+### Boot
+
+```shell
+runqemu qemux86-64 nographic slirp qemuparams="-m 4096"
+```
+
+### Initialize
+
+```shell
+incus admin init --minimal
+```
+
+### Launch a container
+
+```shell
+incus launch images:alpine/edge test1
+incus list
+incus exec test1 -- /bin/sh
+```
+
+### Stop and delete
+
+```shell
+incus stop test1
+incus delete test1
+```
+
+## Dependencies
+
+Incus requires two C libraries that are provided as separate recipes:
+
+- **raft** (`recipes-containers/raft/`) - Raft consensus protocol implementation
+- **cowsql** (`recipes-containers/cowsql/`) - Distributed SQLite built on raft
+
+Runtime dependencies (pulled in automatically via RDEPENDS):
+
+- lxc, lxcfs, dnsmasq, iptables, rsync, squashfs-tools, attr, acl, shadow
+
+## systemd Services
+
+- `incus.service` - Main daemon (auto-enabled)
+- `incus.socket` - Unix socket activation
+
+The daemon creates the `incus-admin` group at install time. Add users to
+this group to grant non-root access to the Incus API.
+
+## Notes
+
+- **Memory**: QEMU needs at least 2GB (`-m 2048`), 4GB recommended
+- **KVM**: Not required but improves VM performance if `/dev/kvm` is available
+- **AppArmor**: Optional, works without it (warning at startup is harmless)
+- **VM support**: Requires QEMU on the target (optional, containers work without it)
+- **Networking**: The default bridge (`incusbr0`) is created by `incus admin init`
+- **Images**: The `images:` remote points to images.linuxcontainers.org
+- **Clustering**: Supported via cowsql; use `incus admin init` interactive mode to configure
+
+## Updating Go Dependencies
+
+The Go module dependencies are managed via go-mod-discovery:
+
+```shell
+bitbake incus -c discover_and_generate
+```
+
+This regenerates the `go-mod-*.inc` files in this directory.