abcdesktop a simple application `xedit`

Release 3.4

Release 3.4 add a simple application support

Requirements

You need to have a

kubernetes cluster ready to run whith abcdesktop.io installed
kubectl or microk8s command-line tool must be configured to communicate with your cluster.
docker command line must be installed too.
your own registry

Create a simple application `xedit`

To illustrate a simple application, we will install X11/xedit inside a container.

Create a Dockerfile to install xedit application from x11-apps package

FROM ubuntu
RUN apt-get update && apt-get install -y --no-install-recommends x11-apps && apt-get clean
LABEL oc.launch=xedit.Xedit
RUN mkdir -p /etc/localaccount 
RUN for f in passwd shadow group gshadow ; do if [ -f /etc/$f ] ; then  cp /etc/$f /etc/localaccount; rm -f /etc/$f; ln -s /etc/localaccount/$f /etc/$f; fi; done
CMD ["/usr/bin/xedit"]

Dockerfile description

This image is based on ubuntu, and install the x11-apps package. Then we define /usr/bin/xedit as the CMD, ENTRYPOINT is also supported.

oc.launch label is the name of the X11 window's WM_CLASS
create a directory /etc/localaccount
the execute runtime adds the generated files [ passwd, shadow, group, gshadow ] to the current container in /etc/localaccount
Build the image for xedit application

REGISTRY=abcdesktopio
docker build -t $REGISTRY/samplexedit .

You should replace the value of REGISTRY=abcdesktopio by your own registry's name. If you don't have one, you can use the abcdesktopio/samplexedit as a readonly dockerhub registry.

Push the image to your registry (only if you have your own registry)

REGISTRY=abcdesktopio
docker push $REGISTRY/samplexedit

Inspect the image to create a json file

REGISTRY=abcdesktopio
docker inspect $REGISTRY/samplexedit:latest > samplexedit.json

Send the image to abcdesktop pyos instance

The commands read the PYOS_POD name, then copy the samplexeyes.json file to /tmp of PYOS_POD, then send the /tmp/samplexeyes.json to REST API server

NAMESPACE=abcdesktop
PYOS_POD_NAME=$(kubectl get pods -l run=pyos-od -o jsonpath={.items..metadata.name} -n "$NAMESPACE" | awk '{print $1}')
kubectl cp samplexeyes.json $PYOS_POD_NAME:/tmp -n $NAMESPACE
kubectl exec -i $PYOS_POD_NAME -n abcdesktop -- curl -X POST -H 'Content-Type: text/javascript' http://localhost:8000/API/manager/image -d @/tmp/samplexedit.json

The endpoint image returns a json documment

[
  {
    "cmd": [
      "/usr/bin/xedit"
    ],
    "path": null,
    "sha_id": "sha256:271cbe5516574119905fe83a733dc5f1c46c1ea337e3e888de63ed419f7e7186",
    "id": "abcdesktopio/samplexedit:latest",
    "architecture": "amd64",
    "os": "linux",
    "rules": {},
    "acl": {
      "permit": [
        "all"
      ]
    },
    "launch": "xedit.Xedit",
    "name": "xedit",
    "icon": "xedit",
    "icondata": "PHN2ZyB2ZXJzaW9uPSIxLjEiIHZpZXdCb3g9IjAgMCA2NCA2NCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIiB4bWxuczp4bGluaz0iaHR0cDovL3d3dy53My5vcmcvMTk5OS94bGluayI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0id2hpdGUiLz48dGV4dCB4PSIwIiB5PSIzMiIgZmlsbD0iYmxhY2siPnhlZGl0PC90ZXh0Pjwvc3ZnPg==",
    "keyword": null,
    "uniquerunkey": null,
    "cat": null,
    "args": null,
    "execmode": null,
    "showinview": null,
    "displayname": "xedit",
    "desktopfile": null,
    "executeclassname": null,
    "executablefilename": "xedit",
    "usedefaultapplication": false,
    "mimetype": [],
    "fileextensions": [],
    "legacyfileextensions": [],
    "secrets_requirement": null,
    "image_pull_policy": "IfNotPresent",
    "image_pull_secrets": null,
    "containerengine": "ephemeral_container",
    "securitycontext": {},
    "created": "2025-02-04T09:36:19.796314327Z"
  }
]