nerdctl-install.md

Nerdctl Installtion with Binary

Repo

• https://github.com/containerd/nerdctl

Prerequisites

• Containerd

Install

#!/bin/bash

get_latest_release() {
  curl --silent "https://api.github.com/repos/$1/releases/latest" | # Get latest release from GitHub api
    grep '"tag_name":' |                                            # Get tag line
    sed -E 's/.*"([^"]+)".*/\1/' |                                    # Pluck JSON value
    cut -c 2-
}

latest_ver=$(get_latest_release containerd/nerdctl)


if [ -f /usr/local/bin/nerdctl ]; then
    echo "${RED}--nerdctl exist.. PASS--${NC}"
else
    echo "${RED}--nerdctl Binary downloading...--${NC}"
    cd ~/
    wget https://github.com/containerd/nerdctl/releases/download/v${latest_ver}/nerdctl-${latest_ver}-linux-amd64.tar.gz
    mkdir ./nerdctl-${latest_ver}
    tar -xvzf nerdctl-${latest_ver}-linux-amd64.tar.gz -C ./nerdctl-${latest_ver}
    cp -r ./nerdctl-${latest_ver}/nerdctl /usr/local/bin/
    rm -rf nerdctl-${latest_ver}*
    nerdctl version
fi


latest_ver=$(get_latest_release containernetworking/plugins)

if [ -d /opt/cni/bin ]; then
    echo "${RED}--CNI plugin exist.. PASS--${NC}"
else
    echo "${RED}--CNI plugin downloading...--${NC}"
    mkdir -p /opt/cni/bin
    cd /opt/cni/bin
    wget https://github.com/containernetworking/plugins/releases/download/v${latest_ver}/cni-plugins-linux-amd64-v${latest_ver}.tgz
    tar -xvzf cni-plugins-linux-amd64-v${latest_ver}.tgz
    rm -rf cni-plugins-linux-amd64-v${latest_ver}.tgz
fi

---

Examples

Basic usage

To run a container with the default bridge CNI network (10.4.0.0/24):

# nerdctl run -it --rm alpine

To build an image using BuildKit:

# nerdctl build -t foo /some-dockerfile-directory
# nerdctl run -it --rm foo

To build and send output to a local directory using BuildKit:

# nerdctl build -o type=local,dest=. /some-dockerfile-directory

To run containers from docker-compose.yaml:

# nerdctl compose up -d
# nerdctl compose down
# nerdctl compose -f ./examples/compose-wordpress/docker-compose.yaml up