This article mainly demonstrates the process of installing Docker and Docker-compose on Raspberry Pi.
Hardware: Raspberry Pi 3B+
System version:
Linux raspberrypi 5.15.76-v7+ #1597 SMP Fri Nov 4 12:13:17 GMT 2022 armv7l GNU/Linux
Testing date: December 12, 2022
Installing Docker
1. Update the system
First, it is necessary to keep the system updated for installation. Run the following command in the command line to update the Raspberry Pi system:
sudo apt-get update && sudo apt-get upgrade2. Download the Docker installation script
Download the appropriate script to install Docker in the Raspberry Pi environment by entering the following command in the command line:
curl -fsSL https://get.docker.com -o get-docker.sh
3. Run the installation script
Once the download is complete, run the script to automatically complete the installation. Enter the following command in the command line:
sudo sh get-docker.sh
After a moment, you will see the following information indicating that the installation was successful.
4. Check the Docker version
Enter the following command in the command line:
docker version
5. Run Docker hello-world
After installation, you can run a hello-world Docker image to experience Docker. If the hello-world image is not present locally, it will be downloaded automatically. Enter the following command in the command line:
sudo docker run hello-worldAfter running, you will see the following information, proving that everything is ready, and you can start your Docker journey.
Check how many Docker images are installed locally
Here is a commonly used Docker command, docker images, which lists how many Docker images are installed in the system and how much space they occupy. For example, using -a allows you to view the Docker image list. Enter the following command in the command line:
sudo docker images -a
Introduction to the Docker images command:
Docker images: List local images. Syntax:
docker images [OPTIONS] [REPOSITORY[:TAG]]OPTIONS explanation:
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-a: List all local images (including intermediate image layers; by default, intermediate image layers are filtered out);
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–digests: Display the digest information of the images;
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-f: Display images that meet conditions;
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–format: Specify the template file for the return value;
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–no-trunc: Display complete image information;
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-q: Only display image IDs.
Add a non-root user to the Docker group
According to the Raspberry Pi process, any user with administrative privileges can be considered a root user and can execute containers.
For example, if the user is not logged in as root, they need to use the sudo prefix.
We can also add a non-root user to the Docker group, allowing them to run Docker commands directly without adding sudo before the Docker command.
Below is the syntax for adding a user to the Docker group.
sudo usermod -aG docker [user_name]For example, to add the default user Pi in Raspbian, you can refer to the command below:
sudo usermod -aG docker piThen, restart with sudo reboot
Installing Docker-compose
Install using apt-get
Directly use the following command in the command line to install:
sudo apt-get install docker-compose
Do not recommend installing with PIP3
It is not recommended to use pip3 to install docker-compose
pip3 install docker-compose # Not recommended because it will cause errorsThe following error will be prompted ERROR: Failed building wheel for bcrypt
note: This error originates from a subprocess, and is likely not a problem with pip.
ERROR: Failed building wheel for bcrypt
Failed to build bcrypt
ERROR: Could not build wheels for bcrypt, which is required to install pyproject.toml-based projects