Debug apt / Installing Docker - Unable to locate package docker-ce

I have followed official instructions for Docker installation - Debian Jessie.

• In /etc/apt/sources.list it says now,

  deb [arch=amd64] jessie stable

• apt-get update seems to download packages correctly (output below)

• but then, on apt-get install docker-ce, the system reports to be "unable to locate package docker-ce".

How can I debug what is happening? Never had this before.

Output of apt-get update:

Hit jessie InRelease Hit jessie/updates InRelease Hit jessie/all Sources Hit jessie/updates/main Sources Hit jessie/updates/contrib Sources Hit jessie/all i386 Packages Hit jessie/updates/main i386 Packages Hit jessie/updates/contrib i386 Packages Hit jessie/updates/contrib Translation-en Hit jessie InRelease Hit jessie/updates/main Translation-en Ign jessie InRelease Hit jessie/stable amd64 Packages Hit jessie-updates InRelease Hit jessie Release.gpg Get:1 jessie/stable Translation-en_US [587 B] Ign jessie/all Translation-en_US Ign jessie/all Translation-en Hit jessie-updates/main Sources Get:2 jessie/stable Translation-en [584 B] Hit jessie-updates/contrib Sources Get:3 jessie/stable Translation-en_US [587 B] Get:4 jessie-updates/main i386 Packages/DiffIndex [8,884 B] Get:5 jessie/stable Translation-en [584 B] Hit jessie-updates/contrib i386 Packages Hit jessie-updates/contrib Translation-en Get:6 jessie/stable Translation-en_US [587 B] Get:7 jessie-updates/main Translation-en/DiffIndex [3,688 B] Get:8 jessie/stable Translation-en [584 B] Hit jessie Release Get:9 jessie/stable Translation-en_US [587 B] Hit jessie/main Sources Get:10 jessie/stable Translation-en [584 B] Hit jessie/contrib Sources Hit jessie/main i386 Packages Get:11 jessie/stable Translation-en_US [587 B] Ign jessie/stable Translation-en_US Hit jessie/contrib i386 Packages Hit jessie/contrib Translation-en Hit jessie/main Translation-en Get:12 jessie/stable Translation-en [584 B] Ign jessie/stable Translation-en 

2 Answers

To install docker-ce on debian jessie:

After adding deb [arch=amd64] jessie stable to your /etc/sources.list. ( you don't need the software-properties-common package or the add-apt-repository command)

Install the required package:

sudo apt-get update sudo apt-get install apt-transport-https ca-certificates curl 

Add the gpg key:

curl -fsSl | sudo apt-get key add - 

Update and search for docker-ce package:

sudo apt-get update apt-cache search docker-ce 

Then install the docker-ce package:

sudo apt-get install docker-ce 

Specific answer for linuxmint user. Description: Linux Mint 20.1 Codename: ulyssa

While offical release (ubuntu), have the necessary file and the official docker installation method using dpkg. You can download manually the necessary file and install it using dpkg

I try the official script to install but it fails.

Disclaimer, it may have unintended drawback

It avaliable on snap, just do sudo snap install docker