Merge pull request #102 from Roblox/nerdctl

Add nerdctl to vagrant VM.

Author: shishir-a412ed

README.md

@@ -77,6 +77,8 @@ will launch the job.<br/>
 
 More detailed instructions are in the [`example README.md`](https://github.com/Roblox/nomad-driver-containerd/tree/master/example)
 
+To interact with `images` and `containers` directly, you can use [`nerdctl`](https://github.com/containerd/nerdctl) which is a docker compatible CLI for `containerd`. `nerdctl` is already installed in the vagrant VM at `/usr/local/bin`.
+
 ## Supported options
 
 **Driver Config**

Vagrantfile

@@ -23,6 +23,7 @@ Vagrant.configure("2") do |config|
     apt-get install -y unzip gcc runc jq
     echo "export GOPATH=/home/vagrant/go" >> /home/vagrant/.bashrc
     echo "export PATH=$PATH:/usr/local/go/bin" >> /home/vagrant/.bashrc
+    echo "export CONTAINERD_NAMESPACE=nomad" >> /home/vagrant/.bashrc
     source /home/vagrant/.bashrc
     # without keeping HOME env, 'sudo make test' will try to find files under /root/go/
     echo "Defaults env_keep += HOME" | sudo tee /etc/sudoers.d/keep_home
@@ -50,6 +51,13 @@ Vagrant.configure("2") do |config|
        rm -f containerd-1.3.4.linux-amd64.tar.gz
     fi
 
+    # Install nerdctl 0.10.0
+    if [ ! -f "/usr/local/bin/nerdctl" ]; then
+       curl -L --silent -o nerdctl-0.10.0-linux-amd64.tar.gz https://github.com/containerd/nerdctl/releases/download/v0.10.0/nerdctl-0.10.0-linux-amd64.tar.gz
+       tar -C /usr/local/bin -xzf nerdctl-0.10.0-linux-amd64.tar.gz
+       rm -f nerdctl-0.10.0-linux-amd64.tar.gz
+    fi
+
     # Create source directory for privileged.nomad example job.
     mkdir -p /tmp/s1