Corn.dev agent installer

#!/bin/bash

set -e

if [ -f /etc/redhat-release ]; then
    echo "RHEL-like installation"
    yum install -y redhat-lsb-core
fi

OS=`lsb_release -i -s`

case "$OS" in
    CentOS)
        DOCKER_V=`docker version  --format '{{.Server.Version}}' 2>/dev/null | sed -E 's/\..*$//g'`
        if [ "$DOCKER_V" == "" ]; then
            #apt-get install -y docker.io
            yum install -y yum-utils
            echo "Install docker"
            yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
            yum install -y docker-ce docker-ce-cli containerd.io
            systemctl enable docker
            systemctl start docker
            exit 2
        elif [ "$DOCKER_V" -lt "17" ]; then
            echo "Supported only docker >= 17.x."
            echo "Installed version: $DOCKER_V"
            exit 2
        fi
        echo "RHEL format installation"
        yum install -y curl
        echo '[corn]
name=Corn - $basearch
baseurl=https://repo.corn.dev/centos/$releasever/$basearch/stable
enabled=1
gpgcheck=1
gpgkey=https://repo.corn.dev/centos/gpg' > /etc/yum.repos.d/corn.repo
        yum install -y corndev
        ;;
    Ubuntu)
        DOCKER_V=`docker version  --format '{{.Server.Version}}' 2>/dev/null | sed -E 's/\..*$//g'`
        if [ "$DOCKER_V" == "" ]; then
            apt-get install -y docker.io
        elif [ "$DOCKER_V" -lt "17" ]; then
            echo "Supported only docker >= 17.x."
            echo "Installed version: $DOCKER_V"
            exit 2
        fi
        apt-get install -y curl
        echo "deb http://repo.corn.dev/ubuntu/ `lsb_release -c -s`-corn main" > /etc/apt/sources.list.d/corndev.list
        curl https://repo.corn.dev/debian/corn.asc | apt-key add -
        apt-get update
        apt-get install -y corndev
        ;;
    Debian)
        DOCKER_V=`docker version  --format '{{.Server.Version}}' 2>/dev/null | sed -E 's/\..*$//g'`
        apt-get install -y curl
        if [ "$DOCEKR_V" == "" ]; then
            apt-get install -y apt-transport-https ca-certificates gnupg
            curl -fsSL https://download.docker.com/linux/debian/gpg |  gpg --yes --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
            echo "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/debian $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list > /dev/null
            apt-get update
            apt-get install -y docker-ce docker-ce-cli containerd.io
        elif [ "$DOCKER_V" -lt "17" ]; then
            echo "Supported only docker >= 17.x."
            echo "Installed version: $DOCKER_V"
            exit 2
        fi
        echo "deb http://repo.corn.dev/debian/ `lsb_release -c -s`-corn main" > /etc/apt/sources.list.d/corndev.list
        curl http://repo.corn.dev/debian/corn.asc | apt-key add -
        apt-get update
        apt-get install -y corndev
        ;;
    *)
        echo "Not suported OS"
        exit 2
        ;;
esac

/usr/share/corndev/run-after-installer preconfigured "Identity [REDACTED]" "new"
systemctl start corndev.service
systemctl enable corndev.service