moby: apt repo for Xenial says the package cannot be authenticated

I am using this:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 58118E89F3A912897C070ADBF76221572C52609D
sudo apt-get update

It worked.

I just encountered the very same problem. I managed to reproduce it under 16.04 VM.

If I do the following, the problem doesn’t appear:

apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D
echo "deb https://apt.dockerproject.org/repo ubuntu-xenial main" > /etc/apt/sources.list.d/apt_dockerproject_org_repo.list
apt-get update
apt-get install docker-engine

However, I can reproduce this problem in a fresh VM if I add the repo first, and only add the key after apt-get update. Rerunning apt-get update doesn’t solve the problem:

echo "deb https://apt.dockerproject.org/repo ubuntu-xenial main" > /etc/apt/sources.list.d/apt_dockerproject_org_repo.list
# here it complains about missing F76221572C52609D key
apt-get update
apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D
# this second update changes nothing (albeit it doesn't complain about keys anymore)
apt-get update
# apt-get install complains now (I abort here)
apt-get install docker-engine

Once it gets into this state, the only way to recover seems to be manually removing apt cache files:

rm /var/lib/apt/lists/apt.dockerproject.org_repo_dists_ubuntu-xenial_*
apt-get update
# and now it works
apt-get install docker-engine

It appears to me to be some apt-get quirk - adding a key after retrieving the repo list should be perfectly fine, AFAIK. Hope that helps.

Website instructions are wrong, here is what works in 16.04:

curl -s https://yum.dockerproject.org/gpg | sudo apt-key add
apt-key fingerprint 58118E89F3A912897C070ADBF76221572C52609D
sudo add-apt-repository "deb https://apt.dockerproject.org/repo ubuntu-$(lsb_release -cs) main"
sudo apt-get update
sudo apt-get install docker-engine=1.13.0-0~ubuntu-xenial

I don’t have a physical box to test on, but I just created a fresh Ubuntu Xenial droplet on DigitalOcean, but I’m not able to reproduce, using these steps;

apt-get update
apt-get install apt-transport-https ca-certificates
apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D
echo "deb https://apt.dockerproject.org/repo ubuntu-xenial main" > /etc/apt/sources.list.d/docker.list
apt-get update
apt-get install docker-engine

For Linux Mint 18 this fixed it for me: Menu -> Administration -> Software Sources -> Additional Repositories -> Edit the URL of the docker entry -> Replace sarah with xenial

@hamid-elaosta which region did you run on on DigitalOcean?

Here’s what I did;

1. Created a new droplet (Ubuntu 16.04 x64, AMS3 region, 2GB memory)
2. Logged in, then:

apt-get update
apt-get install apt-transport-https ca-certificates
apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D
echo 'deb https://apt.dockerproject.org/repo ubuntu-xenial main' > /etc/apt/sources.list.d/docker.list
apt-get update
apt-get install linux-image-extra-$(uname -r)
apt-get install docker-engine

After that, running docker version

Client:
 Version:      1.11.1
 API version:  1.23
 Go version:   go1.5.4
 Git commit:   5604cbe
 Built:        Tue Apr 26 23:43:49 2016
 OS/Arch:      linux/amd64

Server:
 Version:      1.11.1
 API version:  1.23
 Go version:   go1.5.4
 Git commit:   5604cbe
 Built:        Tue Apr 26 23:43:49 2016
 OS/Arch:      linux/amd64

Getting same issue

apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D

not getting pubkey for ubuntu 16.04 LTS

So this is the key in question;

http://keyserver.ubuntu.com/pks/lookup?op=get&search=0xF76221572C52609D

If you install it using the fingerprint as documented here “Update your apt sources”, section 4; https://docs.docker.com/engine/installation/linux/ubuntulinux/

sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D

The apt update will succeed but the apt install docker-engine will fail.

If you then remove the key and install it again using;

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys F76221572C52609D

Importantly, using the F7622157 and NOT the fingerprint, followed by and apt update and the apt install docker-engine succeeds.

Hopefully this can point us at the cause.

Here was the solution for me, similar to iEmiya:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 8B48AD6246925553

I Have also been seeing this issue for the last couple of days.I am using Vagrant shell provisioning to run

sudo curl -sSL “https://get.docker.com/” | sh

Up unit 5/6/16, I was able to provision my Ubuntu Trusty VM (Virtual Box) using this script. As of 5/6/16, I started getting:

WARNING: The following packages cannot be authenticated! docker-engine E: There are problems and -y was used without --force-yes

I am operating behind a firewall and proxy. Using my company’s proxy credentials I have been able to set up docker this way for the past few months without issue.