A Digi Container Package (DCP) is a tarball that includes an LXC or OCI (Docker/Podman) container image plus a manifest with information for the ConnectCore Container Manager daemon to manage it during its life cycle (version, runtime arguments, restart options…​)

1. Create a DCP from an existing container image

1.1. Create the manifest

Create a file ~/container-demo/manifest.json in your working directory with the following contents:

Example manifest.json
{
  "package_id": "redis-demo",
  "friendly_name": "Redis Demo",
  "version": "1.0",
  "runtime": "podman",
  "create_args": "--privileged --network host --tty",
  "registration_defaults": {
    "autostart": true,
    "monitor": true,
    "restart": {
      "enabled": true,
      "max_retries": 3,
      "window": 60,
      "retry_delay": 3
    }
  },
  "device_types": ["ccimx95-dvk"],
  "firmware_versions": "",
  "build_id": "",
  "description": "Redis demo image from docker.io",
  "labels": {}
}

1.2. Generate the DCP

Run the following Python script and pass the payload (container image tarball) and manifest as arguments:

$ cd ~/container-demo
$ python3 /usr/local/dey-5.0/sources/meta-digi/meta-digi-containers/scripts/generate-dcp.py \
  --manifest manifest.json \
  --payload redis.tar

This generates an artifact with a filename such as redis-demo-podman-ccimx95-dvk.tar.gz.

For detailed information about Digi Container Package and its manifest see Digi Container Package (DCP).