FOSSTECH Notes

Quick one-liner: Install Docker in rootless mode on SUSE Linux Enterprise Server (SLES) 15 or 16 using openSUSE repositories — no root privileges required for daily container operations. Why This Matters When I first started with Docker, I ran everything as root. It was easy, it worked, and I didn't think twice about it. Then I learned that a container escape vulnerability could give an attacker full root access to my entire system. That's when I switched to rootless Docker — and you should too. Rootless Docker runs the Docker daemon entirely under your regular user account. No sudo required. No root privileges for container operations. If a container gets compromised, the attacker is stuck with your user's permissions — not root. Why SLES? This guide was written based on community votes — many of you asked for SUSE-specific instructions. Here's the thing: Docker CE doesn't publish official packages for SLES. Instead, we use the openSUSE Virt...

Quick one-liner: All the container power, none of the root-level risk. Why This Matters When I first started with Docker, I ran everything as root. It was easy, it worked, and I didn't think twice about it. Then I learned that a container escape vulnerability could give an attacker full root access to my entire system. That's when I switched to rootless Docker — and you should too. Rootless Docker runs the Docker daemon entirely under your regular user account. No sudo required. No root privileges for container operations. If a container gets compromised, the attacker is stuck with your user's permissions — not root. You asked, I delivered: This guide was the #1 request in my LinkedIn poll (Ubuntu/Linux Mint won with 50% of votes). Planning Disk Space In rootless mode, Docker stores all images, containers, volumes, and build cache under your home directory at ~/.local/share/docker . This means your home directory needs enough space to hold every...