The error usually occurs on Debian-based systems (like Ubuntu) when the Docker repository is defined in two different places with different security keys or formats. Why This Happens
After cleaning the files and syncing the paths, run: sudo apt update The "conflicting values" warning should now be gone. 💡 Quick Tip The error usually occurs on Debian-based systems (like
If you see Docker mentioned in sources.list (the main file), it’s best to remove it and keep the dedicated .list file. One file points to a key in /usr/share/keyrings/
One file points to a key in /usr/share/keyrings/ , while another points to /etc/apt/keyrings/ . Refresh the GPG Key Modern Linux systems are
Ensure the signed-by path matches exactly where you saved the Docker GPG key. A standard entry looks like this: deb [arch=amd64 signed-by=/etc/apt/keyrings/docker.asc] https://docker.com jammy stable 4. Refresh the GPG Key
Modern Linux systems are transitioning from the old apt-key method to a more secure GPG key storage system. This conflict typically arises because:
First, find every file mentioning the Docker download URL. Run this command in your terminal: grep -r "download.docker.com" /etc/apt/sources.list /etc/apt/sources.list.d/