How to Install Portainer Docker UI Manager on Ubuntu 20.04 | 18.04 | 16.04

In this tutorial, we explain step by step how to install Portainer Docker management tool on Ubuntu 20.4 | 18.04 | 16.04.

If you’re looking for an open-source and simple to use Docker management. Portainer is a great place to start.

Portainer Community Edition is a completely free, powerful, open-source management toolset that allows you to easily build, manage, and maintain Docker environments. It supports Windows, Linux, and Mac OS. Want to learn more about Portainer, please check their website.

Docker has two editions:  The Enterprise Edition (EE) and the Community Edition (CE). For this tutorial we will use the community edition of Docker. 

Follow the steps and the result will be a running Portainer:

Step 1. Install Docker

If you always want to automatically get the latest version of Docker on Ubuntu, you must add its official repository to Ubuntu system. To do that, run the commands below to install prerequisite packages:

sudo apt update
sudo apt-get install apt-transport-https ca-certificates curl gnupg-agent software-properties-common

Next, run the commands below to download and install Docker’s official GPG key. The key is used to validate packages installed from Docker’s repository making sure they’re trusted.

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo apt-key fingerprint 0EBFCD88

The response would be like this:

Response:

pub rsa4096 2017-02-22 [SCEA]
9DC8 5822 9FC7 DD38 854A E2D8 8D81 803C 0EBF CD88
uid [ unknown] Docker Release (CE deb) <docker@docker.com>
sub rsa4096 2017-02-22 [S]

Now that the official GPG key is installed, run the commands below to add its stable repository to Ubuntu. To add the nightly or test repository, add the word nightly or test (or both) after the word stable in the commands below.

sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

After this command, Docker’s official GPG and repository should be installed on Ubuntu.

If you have older versions of Docker, run the commands below to remove them:

sudo apt-get remove docker docker-engine docker.io containerd runc

When you have removed all the previous versions of Docker, run the commands below to install the latest and current stable version of Docker:

To install specific version of Docker, run the apt-cache command. Then select the version to install.

apt-cache madison docker-ce

Output:
docker-ce | 5:19.03.12~3-0~ubuntu-focal | https://download.docker.com/linux/ubuntu focal/stable amd64 Packages
docker-ce | 5:19.03.11~3-0~ubuntu-focal | https://download.docker.com/linux/ubuntu focal/stable amd64 Packages
docker-ce | 5:19.03.10~3-0~ubuntu-focal | https://download.docker.com/linux/ubuntu focal/stable amd64 Packages
docker-ce | 5:19.03.9~3-0~ubuntu-focal | https://download.docker.com/linux/ubuntu focal/stable amd64 Packages
....

Now to install a specific version, run the commands below with the version you wish to install:

sudo apt-get install docker-ce=5:19.03.10~3-0~ubuntu-focal docker-ce-cli=5:19.03.10~3-0~ubuntu-focal containerd.io

If you just want to latest version without specifying above, run the commands below. The command below will always install the highest possible version:

sudo apt-get install docker-ce docker-ce-cli containerd.io

This will install Docker software on Ubuntu.

Add your account, for most cases it will be ubuntu, to Docker group and restart:

sudo usermod -aG docker $USER

Reboot your instance:

sudo reboot

To verify that Docker CE is installed correctly you can run the hello-world image:

sudo docker run hello-world

If Docker is installed correctly you will see the following response:

Response:

Hello from Docker!
This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.

Step 2. Install Docker Compose

On Ubuntu Linux, you can download the Docker Compose binary from the Compose repository release page on GitHub.

To install it, run the commands below to download version 1.26.0. As of this writing, this was the current version.

sudo curl -L "https://github.com/docker/compose/releases/download/1.26.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

To install a different version of Compose, substitute 1.26.0 with the version of Compose you want to use.

After downloading it, run the commands below to apply executable permissions to the binary file and create a symbolic link to /usr/binary

sudo chmod +x /usr/local/bin/docker-compose
sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose

Now, Docker Compose should work. To test it, we will run the command below:

docker-compose --version

You should see similar output as below:

Response:
docker-compose version 1.24.0, build 0aa59064

Step 3: Setup Portainer

Now that Docker and Docker Composer are installed, follow the steps below to get Portainer setup.

You can use Docker command to deploy the Portainer Server; note the agent is not needed on standalone hosts, however, it does provide additional functionality if used.

To get the server installed, run the commands below.

cd ~/
docker volume create portainer_data
docker run -d -p 8000:8000 -p 9000:9000 --name=portainer --restart=always -v /var/run/docker.sock:/var/run/docker.sock -v portainer_data:/data portainer/portainer

You’ll just need to access the port 9000 of the Docker engine where Portainer is running using your browser.

Note: the -v /var/run/docker.sock:/var/run/docker.sock option can be used in Linux environments only.

After a successful pull, you should get a similar message as below:

latest: Pulling from portainer/portainer
d1e017099d17: Pull complete
a7dca5b5a9e8: Pull complete
Digest: sha256:4ae7f14330b56ffc8728e63d355bc4bc7381417fa45ba0597e5dd32682901080
Status: Downloaded newer image for portainer/portainer:latest
2fd5f4a0883a9d358ad424fd963699445be8839f3e6a2cf73d55778bcc268523

At this point, all you need to do is access Portainer portal to manage Docker. Open your web browser and browse to the server’s hostname or IP address followed by port #9000

http://localhost:9000

You should get Portainer login page to create an admin password.

Submit a new password.

Now you see some options to choose the environment you want to manage.

Since we installed Docker on the same machine, select to connect and manage Docker locally.

You’ll be directed to Portainer dashboard where you can start managing Docker. Browse around and begin setting up your environment. If you had Docker installed on a remote computer, you’ll have to install Portainer agent on the server.

Conclusion:

This tutorial showed you how to install Portainer Docker manager on Ubuntu 20.04 | 18.04 | 16.04.