Home/ Questions/Q 9535
Next
In Process

askthedev.com Latest Questions

Asked: 2024-09-25T23:59:18+05:30 In: ,

What are the steps to install Docker on Ubuntu 16.04 LTS?

I’ve been trying to get Docker up and running on my Ubuntu 16.04 LTS system, but I’m hitting a wall, and I could really use some help. I’ve read a bunch of articles and watched some videos, but I still feel like I’m missing some crucial steps. It’s frustrating because I know Docker could really streamline my development process, but I can’t seem to get it installed properly.

So, the thing is, I want to make sure I’m not skipping any important steps, especially since I’ve seen some tutorials suggest different methods. I’ve done a bit of research and I know that a few key steps should be involved, like updating my package database and installing some prerequisites. But what exactly should I do first?

And then there’s the issue of adding the Docker GPG key and repository – can anyone clarify the best way to do that? I’ve come across different commands, and I’m worried about installing the wrong version or missing the latest updates.

After that, I believe I need to install Docker itself, right? But which command should I be using for that on Ubuntu 16.04? I’ve heard about using `apt-get`, but do I have to do anything special before that?

Oh, and I’ve read about managing user permissions for Docker. Do I really need to add my user to the ‘docker’ group, or can I just use it with sudo every time? I’m a bit concerned about security, so if there are any best practices related to that, I’d love to hear them.

Lastly, how do I verify that Docker was installed correctly? I want to make sure everything is set up before I start running any containers.

I know it’s a lot of questions, but I’d really appreciate any step-by-step help or even pointers to a specific guide that you found really helpful. Thanks!

Share

    Leave an answer

    You must login to add an answer.

    Need An Account,

    2 Answers



    1. Getting Docker Running on Ubuntu 16.04

      Installing Docker on Ubuntu 16.04 LTS

      It can be a bit tricky to set up Docker, but don’t worry! Here’s a step-by-step guide that should help you through the installation process.

      1. Update Your Package Database

      First, you need to make sure your package database is up to date. Open your terminal and run:

      sudo apt-get update

      2. Install Prerequisites

      You’ll need to install a few packages that allow `apt` to use packages over HTTPS:

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

      3. Add Docker’s GPG Key

      Next, you should add Docker’s official GPG key. This helps your system verify the authenticity of the Docker packages. Run the following command:

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

      4. Set Up the Docker Repository

      Now, add the Docker repository to your system:

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

      After adding the repository, you’ll want to update your package database again:

      sudo apt-get update

      5. Install Docker

      Now you can install Docker! Make sure you’re installing from the Docker repository by using:

      sudo apt-get install docker-ce

      6. Manage Permissions

      After installation, you can add your user to the ‘docker’ group. This lets you run Docker commands without `sudo`:

      sudo usermod -aG docker $USER

      This is convenient, but remember to log out and back in to make the changes take effect. As for security, using `sudo` every time is safer if you’re worried about giving too many permissions.

      7. Verify Docker Installation

      Finally, check if Docker is running correctly. You can do this by running:

      docker --version

      And to test if Docker can run a container, use:

      docker run hello-world

      If everything is set up correctly, you should see a message confirming that Docker is working!

      These steps should set you up with Docker on your Ubuntu 16.04 LTS system. Don’t hesitate to check out the official Docker documentation for more references or troubleshooting tips. Good luck!




    2. Installing Docker on Ubuntu 16.04 LTS

      To get started with Docker on your Ubuntu 16.04 LTS system, the first thing you should do is update your package database and install the necessary prerequisites. You can do this by running the following commands in the terminal: sudo apt-get update and sudo apt-get install apt-transport-https ca-certificates curl software-properties-common. Once that’s done, add Docker’s GPG key for package verification using curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -. After that, you will need to add the Docker repository with the command sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable". This ensures you get the latest stable version of Docker. Now, update the package database again with sudo apt-get update.

      Now that the repository is set up, you can install Docker using sudo apt-get install docker-ce. After installation, check that Docker is running correctly by executing sudo systemctl status docker. To avoid using sudo before every Docker command, you can add your user to the Docker group: sudo usermod -aG docker $USER. After running that command, log out and back in for the changes to take effect. It’s always a good idea to verify the installation with docker --version and you can run a test container with docker run hello-world to ensure everything is set up properly. This test will also confirm that your user permissions are set correctly. Make sure to follow best security practices, such as avoiding running Docker as the root user and regularly updating Docker to the latest version.


    Related Questions