Installing Docker and Portainer CE on openSUSE

Step 1: Update Your System

First, ensure your system is up to date by running:

sudo zypper refresh
sudo zypper update

Step 2: Install Docker

Add Docker Repository: OpenSUSE might not have the latest Docker version in its default repositories, so it's best to add the official Docker repository.

For openSUSE Leap 15.2 and later, use:
```
sudo zypper ar -f https://download.opensuse.org/repositories/Virtualization:containers/openSUSE_Leap_15.2/ Virtualization:containers
```

Install Docker:

sudo zypper refresh
sudo zypper install docker

Start and Enable Docker Service:

sudo systemctl start docker
sudo systemctl enable docker

Verify Docker Installation:
```
sudo docker version
sudo docker info
```

Step 3: Add Your User to the Docker Group

To run Docker without sudo, add your user to the docker group:

sudo usermod -aG docker $USER

Then, log out and log back in for the changes to take effect.

Step 4: Install Portainer CE

Create a Docker Volume for Portainer:
```
docker volume create portainer_data
```

Deploy Portainer:

   docker run -d -p 8000:8000 -p 9000:9000 --name portainer \
   --restart=always \
   -v /var/run/docker.sock:/var/run/docker.sock \
   -v portainer_data:/data \
   portainer/portainer-ce:latest

Access Portainer: Open a web browser and navigate to http://localhost:9000. You will be prompted to set up an admin user and password.

Step 5: Configure Portainer (Optional)

Once you have access to the Portainer web interface, you can add endpoints, manage Docker containers, and use various Portainer features.

Troubleshooting Tips

If you encounter permission issues with Docker, ensure you've logged out and back in after adding your user to the docker group.
Ensure that Docker service is running with sudo systemctl status docker.
For any network-related issues, ensure that your firewall allows traffic on the required ports (8000 and 9000).

Following these steps will set up Docker and Portainer CE on your openSUSE system, allowing you to manage Docker containers through a user-friendly web interface.