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Configure Build Environment for Torizon Containers

 

Article updated at 16 Sep 2020
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Select the version of Torizon from the tabs below. If you don't know the version you are using, run the command cat /etc/os-release on the board.

Torizon 5.0.0

Introduction

Torizon supports the docker runtime and this will allow you to run your applications inside containers. It is possible to build and configure containers directly on the target. This works for quick tests or prototypes but is hardly suitable for projects that need to be maintained over time.

In this case, you should define the configuration steps required to initialize your container (installing packages, changing configuration files, adding application-specific content) in a Dockerfile, and use it to build the container on your development machine.

To be able to build containers that can run on a different processor architecture (your development machine will likely use an x86/x64 processor while Toradex's modules have Arm SOCs) you will need to correctly configure the docker environment.

This article complies to the Typographic Conventions for Torizon Documentation.

Prerequisites

  • Windows or Linux host PC for development.

Note: Instructions for Linux machines focus on Debian-based distros.

Install Docker

Here are instructions on how to set up Docker in your computer - which is usually called development PC or simply host.

Windows

Access the Docker for Windows page on the official Docker documentation and go to Install Docker Desktop for Windows. From here you will be redirected to Docker Hub, where you can finally download Docker for Windows.

Linux

The release of Docker provided by some distribution is not up to date, to be sure that you install docker in the correct way please go to docker website and follow instructions for your OS/distribution.

You don't need to install the experimental version, but keeping the docker setup up to date would help you avoid issues that have been already fixed in the latest stable release.

You will need to add your user to the docker group to allow you to run docker client without needing root privileges.

The specific command used to perform this operation may be different, depending on your distribution.

On Debian-based distributions, like Ubuntu, you should use the addgroup command:

$ sudo addgroup <your user name> docker

You will have to logout and login to see the change applied. You can list the groups that contain your user account by typing groups in the shell.

Enable Arm emulation

Arm emulation makes it possible to run Arm instructions on Intel x86-64 architectures. That is, you can run binaries compiled for the Arm instruction set on an x86 computer.

To enable this emulation to be used with Docker, run the following command:

Note: use the same command for Windows (Docker Desktop Hyper-V VM or Docker Desktop using WSL 2 as backend) and Linux distributions.

$ docker run --rm -it --privileged torizon/binfmt

Warning: This operation will run a privileged container, this will run for the time required to enable Arm emulation using binfmt. It should be a safe operation.

This command will install and register the interpreters that will know how to run the arm32v7 and arm64v8 instructions on your Intel x86 development PC. This use the Kernel Linux support for miscellaneous binary formats feature.

To test wheter the interpreters have been successfully installed, run the commands:

Test arm32v7

$ docker run --rm -it arm32v7/debian arch

The return must be:

armv7l

Test arm64v8

$ docker run --rm -it arm64v8/debian arch

The return must be:

aarch64

Torizon 4.0.0

Introduction

Torizon supports the docker runtime and this will allow you to run your applications inside containers. It is possible to build and configure containers directly on the target. This works for quick tests or prototypes but is hardly suitable for projects that need to be maintained over time.

In this case, you should define the configuration steps required to initialize your container (installing packages, changing configuration files, adding application-specific content) in a Dockerfile, and use it to build the container on your development machine.

To be able to build containers that can run on a different processor architecture (your development machine will likely use an x86/x64 processor while Toradex's modules have Arm SOCs) you will need to correctly configure the docker environment.

This article complies to the Typographic Conventions for Torizon Documentation.

Prerequisites

  • Windows or Linux host PC for development.

Note: Instructions for Linux machines focus on Debian-based distros.

Install Docker

Here are instructions on how to set up Docker in your computer - which is usually called development PC or simply host.

Windows

Access the Docker for Windows page on the official Docker documentation and go to Install Docker Desktop for Windows. From here you will be redirected to Docker Hub, where you can finally download Docker for Windows.

Linux

The release of Docker provided by some distribution is not up to date, to be sure that you install docker in the correct way please go to docker website and follow instructions for your OS/distribution.

You don't need to install the experimental version, but keeping the docker setup up to date would help you avoid issues that have been already fixed in the latest stable release.

You will need to add your user to the docker group to allow you to run docker client without needing root privileges.

The specific command used to perform this operation may be different, depending on your distribution.

On Debian-based distributions, like Ubuntu, you should use the addgroup command:

$ sudo addgroup <your user name> docker

You will have to logout and login to see the change applied. You can list the groups that contain your user account by typing groups in the shell.

Enable Arm emulation

Arm emulation makes it possible to run Arm instructions on Intel x86-64 architectures. That is, you can run binaries compiled for the Arm instruction set on an x86 computer.

To enable this emulation to be used with Docker, run the following command:

Note: use the same command for Windows (Docker Desktop Hyper-V VM or Docker Desktop using WSL 2 as backend) and Linux distributions.

$ docker run --rm -it --privileged torizon/binfmt

Warning: This operation will run a privileged container, this will run for the time required to enable Arm emulation using binfmt. It should be a safe operation.

This command will install and register the interpreters that will know how to run the arm32v7 and arm64v8 instructions on your Intel x86 development PC. This use the Kernel Linux support for miscellaneous binary formats feature.

To test wheter the interpreters have been successfully installed, run the commands:

Test arm32v7

$ docker run --rm -it arm32v7/debian arch

The return must be:

armv7l

Test arm64v8

$ docker run --rm -it arm64v8/debian arch

The return must be:

aarch64