Is there a way to view the copyright file of a deb package downloaded from `download.docker.com`?

[linghengqian]

• For deb packages in the Ubuntu built-in apt library such as Ubuntu – Details of package docker.io in oracular docker.io, there is a web page similar to https://changelogs.ubuntu.com/changelogs/pool/universe/d/docker.io-app/docker.io-app_26.1.3-0ubuntu1/copyright showing the copyright file. Most third-party files are marked with LICENSE inside the web page.

• 

• But if I install Docker by following the Docker documentation, I actually download the deb package from https://download.docker.com/linux/ubuntu/.

sudo apt update && sudo apt upgrade -y
sudo apt-get remove docker.io docker-doc docker-compose docker-compose-v2 podman-docker containerd runc
cd /tmp/
sudo apt-get 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

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

sudo apt-get update
sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin -y
sudo groupadd docker
sudo usermod -aG docker $USER
newgrp docker

• There doesn’t seem to be a file like copyright in download.docker.com to mark LICENSE? Or can I simply understand the files in the entire repository of download.docker.com as Apache-2.0 LICENSE, and then the copyright is Docker, Inc?

[rimelek (Ákos Takács)]

You can find the license in the documentation

Docker Engine

Licensing

The Docker Engine is licensed under the Apache License, Version 2.0. See LICENSE for the full license text.

I don’t know about the individal files, but Docker CE (Docker Engine) is free and open source and the Apache 2.0 license is mentioned right in the documentation of the installation guide.