Docker App Store

The Linux microPlatform has the ability to securely deliver and orchestrate containers using TUF. This section will guide you through your first deployment.

Our update solution ota-lite uses the Docker App cloud native application bundle specification for orchestrating container deployments. This is essentially a docker-compose definition with a bit of context wrapped around it to make the applications a bit more generic.

Creating your Docker App Store

The following guide will detail how to create your own Docker App store.

In your factory we have provided the shellhttpd docker application for reference.

However, shellhttpd is disabled until you instruct your factory to build the container and Docker App definition. To enable it, clone your containers.git project, and make the following changes:

git clone<myfactory>/containers.git/
cd containers
git mv shellhttpd.dockerapp.disabled shellhttpd.dockerapp
git mv shellhttpd.disabled shellhttpd
git commit -m "enable shellhttpd docker-app"
git push

If the git clone fails with an unable to access error then check you have a valid token in your .netrc file. You can look at Getting Started for instructions.

You can monitor your CI builds here:

Once the container has been built, and the Docker App has been published, your device will be presented with a new Docker App target that can be updated.

To enable this new Docker App target, on the device edit the following file:

sudo vim /var/sota/sota.toml

Under the the pacman section of the sota.toml file add the following line:

docker_apps = "shellhttpd"

Save the file and restart the aktualizr-lite daemon to reload the configuration:

sudo systemctl restart aktualizr-lite

Your device will begin to update, and once the update is complete, you can check the status of the container by running the following commands:

docker ps -a

Then from your host machine you can access the HTTP server from a browser at:

Now that you have successfully deployed your first docker-app, you are free to create your own containers and app definitions. Simply push them to the containers.git repo and “voila”!

Importing Docker Apps

If you would like to import existing docker-apps into your factory (this example uses our Community Docker App store), the process is simple. To import our openthread-gateway.dockerapp into your factory, run the following commands:

git clone<myfactory>/containers.git
cd containers
git remote add fio
git remote update
git checkout remotes/fio/master -- openthread-gateway.dockerapp
git add openthread-gateway.dockerapp
git commit -m "add openthread docker-app"
git push

The above commands will checkout the docker-app definition from the community container repository and push it into your FoundriesFactory container repository. This will trigger a container build. Once complete the new docker-app will be available for use on your devices:

sudo vim /var/sota/sota.toml

If you have followed the example above, extend the docker_apps list in the pacman section of the sota.toml file like the example below:

docker_apps = "shellhttpd, openthread-gateway"

Creating Docker Apps

If you create a new Docker App deployment, and want it to be deployed on a device, edit the sota.toml on that specific device like below:

sudo vim /var/sota/sota.toml

Extend the docker_apps list like the example below:

docker_apps = "shellhttpd, mynewapp"

Now restart the aktualizr-lite daemon to reload the configuration:

sudo systemctl restart aktualizr-lite

Assuming that your new Docker App has been published, the device will begin to update.