نصب Docker روی Ubuntu 26

چیت‌شیت نصب Docker از صفر روی Ubuntu 26، شامل حذف نسخه‌های قدیمی/توزیعی، اضافه کردن ریپازیتوری رسمی Docker، و نصب Docker Engine به همراه Compose plugin.

# Remove old/distro-provided Docker packages
sudo apt remove -y docker docker.io docker-compose docker-compose-plugin

# Update package index and install prerequisites
sudo apt update
sudo apt install -y ca-certificates curl gnupg lsb-release

# Set up the directory for apt keyrings
sudo install -m 0755 -d /etc/apt/keyrings

# Download Docker's official GPG key
curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

# Add the official Docker repository
echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" \
| sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

# Update index again and install Docker Engine + Compose plugin
sudo apt update
sudo apt install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

# (Optional) install the standalone docker-compose binary as well
sudo curl -SL https://github.com/docker/compose/releases/download/v2.29.2/docker-compose-linux-x86_64 \
-o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose

بعد از نصب، برای اجرای Docker بدون sudo، یوزر رو به گروه docker اضافه کن و یه بار logout/login کن:

sudo usermod -aG docker $USER