install-docker.sh

#!/usr/bin/env bash
set -e

echo "======================================="
echo " Installing Docker Engine"
echo "======================================="

apt-get update

apt-get install -y \
    ca-certificates \
    curl \
    gnupg \
    lsb-release

install -m 0755 -d /etc/apt/keyrings

if [ ! -f /etc/apt/keyrings/docker.asc ]; then
    curl -fsSL https://download.docker.com/linux/ubuntu/gpg \
        -o /etc/apt/keyrings/docker.asc
fi

chmod a+r /etc/apt/keyrings/docker.asc

ARCH=$(dpkg --print-architecture)
CODENAME=$( . /etc/os-release && echo "$VERSION_CODENAME")

echo \
"deb [arch=${ARCH} signed-by=/etc/apt/keyrings/docker.asc] \
https://download.docker.com/linux/ubuntu ${CODENAME} stable" \
> /etc/apt/sources.list.d/docker.list

apt-get update

apt-get install -y \
    docker-ce \
    docker-ce-cli \
    containerd.io \
    docker-buildx-plugin \
    docker-compose-plugin

systemctl enable docker || true
systemctl start docker || true

echo
echo "Docker Version:"
docker --version

echo
echo "Docker Compose Version:"
docker compose version

echo
echo "Testing Docker..."
docker run hello-world || true

echo
echo "======================================="
echo " Docker installation complete!"
echo "======================================="