From Scratch

Its as easy as pulling the docker container, having docker build our project image, and flashing the SD Card!
_{With the caviot that maybe you’ll need to install docker if you don’t already have it see here}

Important Preamble

Ubuntu 18.04 on x86_64 system used as Host/Build system. Others not tested.
As of the date of writing, version 4.3 does not support the 2GB version.
A clarification as provided by nVidia:

A Jetson Nano 2GB Developer Kit includes a non-production specification Jetson module (P3448-0003) attached to a reference carrier board (P3542-0000).
This user guide covers two revisions of the developer kit:

Part Number 945-13541-0000-000 including 802.11ac wireless adapter and cable

Part Number 945-13541-0001-000 NOT including adapter and cable

We are targeting to build for the module, which means the default was set to P3448-0003.

Pull the Docker Container

Get the docker container with everything neccessary to build by executing docker pull calebprovost/dockter-l4t:sdk_installed (be prepared… its ~10G).

If you wish to adjust the environments and/or the docker container, you can find the source here: CalebProvost/dockter-l4t
_{Info: Executing the build.sh outside of the Docker container will fail. It is a script which runs automatically by and inside the docker container itself.}

Run the Docker Container to Build Our Project Image

Run the following command to build our project image for the jetson-nano-2gb-devkit board with our custom program code in it. docker run -it -v $PWD:/home/user/build --name dl4t calebprovost/dockter-l4t:sdk_installed bash -c ./build.sh

If you’d like to build the OE4T demo image without our layer and code, execute the container eithout the appended command like so:
docker run -it -v $PWD:/home/user/build --rm calebprovost/dockter-l4t:sdk_installed

Flash the SD Card

The SD Card image is created using the L4T SD Card tools and placed in the root of this directory. It’s default name will be “demo-image-full-jetson-nano-2gb-devkit.img” but will follow the following naming convention if the defaults were overwritten in the prior steps: "${BUILD_IMAGE}-${MACHINE}.img"

Use your flavor of SD Card flashing tool (like balenaEtcher for Windows or dd for linux) and flash the provided image onto an SD card and insert into the Jetson nano to start having fun.

Note: An SD Card sized ~16GB will be needed. We found that our image was 300MB too large and thus used a 32GB card instead.

Install Docker

See the latest installation method for your distro from Docker’s website.
The following was used to install on the host build system:

Install the package dependencies

  sudo apt-get install -y apt-transport-https ca-certificates curl gnupg lsb-release

Add Docker Keys

  sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg | \
  sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

Add Docker’s repository to the package manager

  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

Install Docker
```
  sudo apt-get install docker.io
```
Follow the post-install steps for Docker. </br> Most importantly, create a new group called docker and add your username to it. Changes take affect upon logging in again (reboot): </br> sudo usermod -aG docker $USER && newgrp docker && su -l $USER

Optional: If you’d like to change the docker storage location to an external device, feel free to do the following:

Edit /etc/docker/daemon.json (if it doesn’t exist, create it) and include:
```
  {
  "data-root": "/new/path/to/docker-data"
  }
```

Then restart Docker with:

  sudo systemctl daemon-reload
  sudo systemctl restart docker