Add support for nerdctl on macos.

This includes:
- nerdctl as a CLI that can be added to the path like the other
  tools.
- An updated version of alpine-lima that includes nerdctl and the
  other binaries it needs.
- ~ is mounted so that nerdctl build can access the files to build.
  nerdctl build will not work for locations outside of ~.
- A .profile file exporting an environment variable to tell nerdctl
  where the containerd socket is as k3s puts it in a non-standard
  location.

Note, in the future we should look at taring up the build directory
and sending it to the VM. That would be a more substancial effort
to accomplish.

Related to rancher-sandbox#566

Thanks to Jan for all the pointers in creating this and the alpine-lima
build.

Signed-off-by: Matt Farina <[email protected]>

resources/darwin/bin/nerdctl

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+scriptdir="${BASH_SOURCE[0]}"
+[ -L "${scriptdir}" ] && scriptname="$(readlink "${scriptdir}")"
+scriptdir="$(cd "$(dirname "${scriptname}")" && pwd)"
+
+if ! LIMA_HOME="$HOME/Library/State/rancher-desktop/lima" ${scriptdir}/../lima/bin/limactl ls | grep -q -E "rancher-desktop +Running"; then 
+  echo "Rancher Desktop is not running. Please start Rancher Desktop to use nerdctl"; 
+else
+  LIMA_HOME="$HOME/Library/State/rancher-desktop/lima" ${scriptdir}/../lima/bin/limactl shell rancher-desktop nerdctl $@
+fi

resources/scripts/profile

@@ -0,0 +1 @@
+export CONTAINERD_ADDRESS=/run/k3s/containerd/containerd.sock

scripts/download/lima.mjs

@@ -10,7 +10,7 @@ const limaRepo = 'https://github.com/rancher-sandbox/lima-and-qemu';
 const limaTag = 'v1.3';
 
 const alpineLimaRepo = 'https://github.com/lima-vm/alpine-lima';
-const alpineLimaTag = 'v0.1.2';
+const alpineLimaTag = 'v0.1.3';
 const alpineLimaEdition = 'std';
 const alpineLimaVersion = '3.13.5';
 

src/k8s-engine/lima.ts

@@ -46,6 +46,7 @@ enum Integrations {
   HELM = 'helm',
   KIM = 'kim',
   KUBECTL = 'kubectl',
+  NERDCTL = 'nerdctl',
 }
 
 /**
@@ -355,12 +356,12 @@ export default class LimaBackend extends events.EventEmitter implements K8s.Kube
     const baseConfig: Partial<LimaConfiguration> = currentConfig || {};
     const config: LimaConfiguration = merge(baseConfig, DEFAULT_CONFIG as LimaConfiguration, {
       images:     [{
-        location: resources.get(os.platform(), 'alpline-lima-v0.1.2-std-3.13.5.iso'),
+        location: resources.get(os.platform(), 'alpline-lima-v0.1.3-std-3.13.5.iso'),
         arch:     'x86_64',
       }],
       cpus:   this.cfg?.numberCPUs || 4,
       memory: (this.cfg?.memoryInGB || 4) * 1024 * 1024 * 1024,
-      mounts: [{ location: path.join(paths.cache(), 'k3s'), writable: false }],
+      mounts: [{ location: path.join(paths.cache(), 'k3s'), writable: false },{location: "~", writable: false }],
       ssh:    { localPort: await this.sshPort },
       k3s:    { version: desiredVersion },
     });
@@ -480,6 +481,8 @@ export default class LimaBackend extends events.EventEmitter implements K8s.Kube
       await this.ssh('chmod', 'a+x', 'bin/install-k3s');
       await fs.promises.chmod(path.join(paths.cache(), 'k3s', fullVersion, 'k3s'), 0o755);
       await this.ssh('sudo', 'bin/install-k3s', fullVersion, path.join(paths.cache(), 'k3s'));
+
+      await this.lima('copy', resources.get('scripts', 'profile'), `${ MACHINE_NAME }:~/.profile`);
     } finally {
       await fs.promises.rm(workdir, { recursive: true });
     }

src/resources.ts

@@ -7,6 +7,7 @@ const adjustNameWithDir: Record<string, string> = {
   helm:    path.join('bin', 'helm'),
   kim:     path.join('bin', 'kim'),
   kubectl: path.join('bin', 'kubectl'),
+  nerdctl: path.join('bin', 'nerdctl'),
 };
 
 function fixedSourceName(name: string) {