__//Tested in Ubuntu Server 24.x//__

Update and install dependencies:
<code>
sudo apt update
sudo apt install ca-certificates curl gnupg lsb-release -y
</code>

Add Docker’s official GPG key:
<code>
sudo install -m 0755 -d /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
sudo chmod a+r /etc/apt/keyrings/docker.gpg
</code>

Set up the repository:
<code>
echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
</code>

Install Docker Engine:
<code>
sudo apt update
sudo apt install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin -y
</code>

Create base folder (suggest to put in home folder or /opt folder)
**create as regular user, not root if in home folder**
<code>
sudo cd /opt
sudo mkdir docker
</code>

However, to make your life easier when using Docker as a regular user (if under /opt), there is a specific way to handle the permissions.

Change Ownership to your user, this is the "secret sauce." It allows your regular user (and Webmin's file manager) to edit the config files without needing sudo every single time.
<code>
    sudo chown -R $USER:$USER /opt/docker
</code>