A simple Docker and Docker Compose install script for Ubuntu

A simple Docker and Docker Compose install script for Ubuntu.md

A simple Docker and Docker Compose install script for Ubuntu

Usage

1. sh install-docker.sh
2. log out
3. log back in

Links

The script was assembled using the official Docker docs:

• Get Docker Engine - Community for Ubuntu
• Install Docker Compose as a container
• Command-line completion

install-docker.sh

#!/bin/sh

set -o errexit
set -o nounset

IFS=$(printf '\n\t')

# Docker
sudo apt remove --yes docker docker-engine docker.io containerd runc || true
sudo apt update
sudo apt --yes --no-install-recommends install apt-transport-https ca-certificates
wget --quiet --output-document=- https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo add-apt-repository --yes "deb [arch=$(dpkg --print-architecture)] https://download.docker.com/linux/ubuntu $(lsb_release --codename --short) stable"
sudo apt update
sudo apt --yes --no-install-recommends install docker-ce docker-ce-cli containerd.io
sudo usermod --append --groups docker "$USER"
sudo systemctl enable docker
printf '\nDocker installed successfully\n\n'

printf 'Waiting for Docker to start...\n\n'
sleep 5

# Docker Compose
sudo wget --output-document=/usr/local/bin/docker-compose "https://github.com/docker/compose/releases/download/$(wget --quiet --output-document=- https://api.github.com/repos/docker/compose/releases/latest | grep --perl-regexp --only-matching '"tag_name": "\K.*?(?=")')/run.sh"
sudo chmod +x /usr/local/bin/docker-compose
sudo wget --output-document=/etc/bash_completion.d/docker-compose "https://raw.githubusercontent.com/docker/compose/$(docker-compose version --short)/contrib/completion/bash/docker-compose"
printf '\nDocker Compose installed successfully\n\n'

Handy script! To skip the log out/log in you could add newgrp docker after line 16

@hermannolafs You can't use newgrp in a script because it starts a subshell, see https://unix.stackexchange.com/questions/18897/problem-while-running-newgrp-command-in-script.

Well that's not so great.

# Docker Compose
compose_release() {
  curl --silent "https://api.github.com/repos/docker/compose/releases/latest" |
  grep -Po '"tag_name": "\K.*?(?=")'
}

if ! [ -x "$(command -v docker-compose)" ]; then
  curl -L https://github.com/docker/compose/releases/download/$(compose_release)/docker-compose-$(uname -s)-$(uname -m) \
  -o /usr/local/bin/docker-compose && chmod +x /usr/local/bin/docker-compose
fi

nice bruh

For Docker installation I just use this:

curl -fsSL https://get.docker.com -o get-docker.sh
sh get-docker.sh

set -o errexit make it fails on a first time installation?

Completion have changed:
https://docs.docker.com/compose/completion/

Thank you for the script!

@orensbruli

set -o errexit make it fails on a first time installation?

set -o errexit makes the script exit when any command fails. Does some specific command fail for you on a first time installation?

Completion have changed:
https://docs.docker.com/compose/completion/

I don't see how it changed, could you be more specific?

@orensbruli

set -o errexit make it fails on a first time installation?

set -o errexit makes the script exit when any command fails. Does some specific command fail for you on a first time installation?

If it's a first-time installation I think the sudo apt remove --yes docker docker-engine docker.io containerd runc fails, so no other command is executed. I removed the errexit and it worked.

Completion have changed:
https://docs.docker.com/compose/completion/

I don't see how it changed, could you be more specific?

Yes, sorry, my fault. It's not the completion that is failing, it's the download of the compose itself.
It's because the last release (1.29.2) doesn't have a run.sh in the release:
https://github.com/docker/compose/releases/

But it's probably a problem with the docker-compose repo:
docker/compose#8335
Thank you for sharing!

@orensbruli Hmm, I just tried the sudo apt remove command several times, it always exits with code 0, even if the packages are already removed. Strange.

I can confirm that sudo apt remove --yes docker docker-engine docker.io containerd runc fails on Ubuntu 21.04.

apt version: apt 2.2.3 (amd64)

@tddschn Does it show an error message? Also, could you please run it manually and check the exit code? You can check the exit code like this: echo $?

@EvgenyOrekhov The error code is 100 (tested).
From apt.1: apt returns zero on normal operation, decimal 100 on error.
It seems that apt remove a package that is not installed throws and error on apt version 2.2.3, but there's no error on 2.2.4.

@tddschn Thanks! I added || true to ignore apt remove errors.

Not work for Docker Compose v2

compose_release() {
  curl --silent "https://api.github.com/repos/docker/compose/releases/latest"   #@|
  grep -Po '"tag_name": "\K.*?(?=")'
}

if ! [ -x "$(command -v docker-compose)" ]; then
  curl -L https://github.com/docker/compose/releases/download/$(compose_release)/docker-compose-$(uname -s)-$(uname -m) \
  -o /usr/local/bin/docker-compose && chmo

Current script fails on docker compose

`Docker installed successfully

Waiting for Docker to start...

--2021-12-02 08:25:56-- https://github.com/docker/compose/releases/download/v2.1.1/run.sh
Resolving github.com (github.com)... 140.82.121.4
Connecting to github.com (github.com)|140.82.121.4|:443... connected.
HTTP request sent, awaiting response... 404 Not Found
2021-12-02 08:25:56 ERROR 404: Not Found.`

running compose version also returns permissions denied

docker-compose --version
-bash: /usr/local/bin/docker-compose: Permission denied

The link to run.sh seems broken

--2021-12-19 11:45:04--  https://github.com/docker/compose/releases/download/v2.2.2/run.sh
Resolving github.com (github.com)... 140.82.121.3
Connecting to github.com (github.com)|140.82.121.3|:443... connected.
HTTP request sent, awaiting response... 404 Not Found
2021-12-19 11:45:04 ERROR 404: Not Found.

@decentraliser yes the link is broken, since the 2.x rework in GoLang the auto completion script was removed
I suggest we remove the auto completion install form the script

Reference:
docker/docs#14692 (comment)
docker/cli#3429 (review)

#!/bin/sh

set -o errexit
set -o nounset
IFS=$(printf '\n\t')

# Docker
curl -fsSL https://get.docker.com -o get-docker.sh
sudo sh get-docker.sh
printf '\nDocker installed successfully\n\n'

printf 'Waiting for Docker to start...\n\n'
sleep 5

# Docker Compose
COMPOSE_VERSION=$(curl -s https://api.github.com/repos/docker/compose/releases/latest | grep 'tag_name' | cut -d\" -f4)
sudo curl -L https://github.com/docker/compose/releases/download/${COMPOSE_VERSION}/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
sudo curl -L https://raw.githubusercontent.com/docker/compose/${COMPOSE_VERSION}/contrib/completion/bash/docker-compose > /etc/bash_completion.d/docker-compose
printf '\nDocker Compose installed successfully\n\n'
sudo docker-compose -v