Repository navigation
Switch to docker.sources #3942
Description
Currently netlab install containerlab creates docker.list here
netlab/netsim/install/containerlab.sh
Line 25 in 26ad4c4
Which make
apt to complain on 26.04:
Notice: Some sources can be modernized. Run 'apt modernize-sources' to do so.
The official docker ubuntu install page says to use docker.sources instead
https://docs.docker.com/engine/install/ubuntu/#install-using-the-repository
# Add Docker's official GPG key:
sudo apt update
sudo apt install ca-certificates curl
sudo install -m 0755 -d /etc/apt/keyrings
sudo 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 repository to Apt sources:
sudo tee /etc/apt/sources.list.d/docker.sources <<EOF
Types: deb
URIs: https://download.docker.com/linux/ubuntu
Suites: $(. /etc/os-release && echo "${UBUNTU_CODENAME:-$VERSION_CODENAME}")
Components: stable
Architectures: $(dpkg --print-architecture)
Signed-By: /etc/apt/keyrings/docker.asc
EOF
sudo apt update
and it claims to be applicable to:
Ubuntu Resolute 26.04 (LTS)
Ubuntu Noble 24.04 (LTS)
Ubuntu Jammy 22.04 (LTS)
https://docs.docker.com/engine/install/ubuntu/#os-requirements
Activity
ipspace commentedon Oct 11, 2026
Thank you! Please submit the changes you documented as a PR, and I'll test it on the three Ubuntu versions we support and merge it.
containerlab install: use docker.sources and a repository-scoped key (i…