Docker and Docker Compose are powerful tools that facilitate containerization and the management of multi-container applications. Docker allows you to create and run containers, while Docker Compose simplifies the orchestration of multiple containers within an application. In this blog post, we will guide you through the process of installing Docker and Docker Compose on Ubuntu, enabling you to leverage the benefits of containerization in your projects.
Step 1: Update package lists
Before we begin, let’s ensure that our Ubuntu system has the latest package information. Open a terminal and run the following command:
sudo apt update |
Step 2: Install necessary packages to allow apt to use repositories over HTTPS
To prepare our system for Docker installation, we need to install a few prerequisite packages. Execute the following command:
sudo apt install apt-transport-https ca-certificates curl software-properties-common |
Step 3: Add the official Docker GPG key
To authenticate Docker’s official repositories, we’ll add the GPG key. Run the following command:
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg |
Step 4: Add the Docker repository to APT sources
To access the Docker packages from the official repository, we need to add the repository to our APT sources. Execute the following command:
echo "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null |
Step 5: Update package lists again
After adding the Docker repository, update the package lists once more:
sudo apt update |
Step 6: Install Docker
Now, we can proceed with the installation of Docker itself. Run the following command:
sudo apt install docker-ce docker-ce-cli containerd.io |
Step 7: Verify the installation
To confirm that Docker is installed correctly, we’ll run a simple test by executing a Docker container. Enter the following command:
sudo docker run hello-world |
If the installation was successful, you should see a “Hello from Docker!” message in the terminal.
Step 8: Install Docker Compose
To install Docker Compose on Ubuntu, follow these additional steps:
Step 1: Update package lists
sudo apt update |
Step 2: Install required packages
sudo apt install curl |
Step 3: Download the Docker Compose binary
sudo curl -L "https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose |
Step 4: Apply executable permissions to the binary
sudo chmod +x /usr/local/bin/docker-compose |
Step 5: Verify the installation
docker-compose --version |
This command will display the installed version of Docker Compose if the installation was successful.
Conclusion:
Congratulations! You have successfully installed Docker and Docker Compose on your Ubuntu system. With Docker, you can create and manage containers for your applications, while Docker Compose allows you to define and orchestrate multi-container setups easily. These powerful tools provide flexibility and scalability, enabling you to streamline your development and deployment processes.
Now that you have Docker and Docker Compose up and running, explore the world of containerization and unlock the potential of your projects by leveraging their capabilities. Happy containerizing!
