Docker community edition installation on Linux

docker-ce-install.sh

#!/bin/bash

# Check if script is run as root
if [[ $EUID -ne 0 ]]; then
    echo "This script must be run as root. Please use sudo."
    exit 1
fi

# Update package index
if command -v apt-get &> /dev/null; then
    apt-get update
elif command -v yum &> /dev/null; then
    yum makecache
else
    echo "Unsupported package manager. Exiting."
    exit 1
fi

# Install required dependencies
if command -v apt-get &> /dev/null; then
    apt-get install -y apt-transport-https ca-certificates curl software-properties-common
elif command -v yum &> /dev/null; then
    yum install -y yum-utils device-mapper-persistent-data
else
    echo "Unsupported package manager. Exiting."
    exit 1
fi

# Add Docker repository
if command -v add-apt-repository &> /dev/null; then
    add-apt-repository "deb [arch=$(dpkg --print-architecture)] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
    # Add Docker GPG key
    curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
elif command -v yum-config-manager &> /dev/null; then
    yum-config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo
    # Add Docker GPG key for CentOS
    rpm --import https://download.docker.com/linux/centos/gpg
else
    echo "Unsupported package manager. Exiting."
    exit 1
fi

# Install Docker CE
if command -v apt-get &> /dev/null; then
    apt-get update
    apt-get install -y docker-ce docker-ce-cli containerd.io
elif command -v yum &> /dev/null; then
    yum install -y docker-ce docker-ce-cli containerd.io
else
    echo "Unsupported package manager. Exiting."
    exit 1
fi

# Add User to Docker group
if [ -n "$SUDO_USER" ]; then
    usermod -aG docker "$SUDO_USER"
else
    echo "Could not determine user to add to Docker group."
fi

# Enable and start Docker service
if command -v systemctl &> /dev/null; then
    systemctl enable docker && systemctl start docker
elif command -v service &> /dev/null; then
    service docker start
else
    echo "Unsupported service management tool. You may need to start Docker manually."
fi

echo "Docker CE has been successfully installed and started."

Docker Easy Installation for Raspberry PI

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curl -sSL https://get.docker.com | sh
sudo usermod -aG docker $USER