Check out the Jetson specific Dockerfiles in the repo.
The line:
# Copy contents and configure git
COPY . .
copies the contents in the directory you’re working in, into the Docker container. So you can use that to build your image. Then you’d need to push it to a container registry to pull onto other devices.
Alternatively, if you have a repo, you can add the appropriate Dockerfile, then clone your code and build the image locally on each device.