dbus | yet another databus that transfer/transform pipeline data

I'm using the zbus crate to make a server able to get events from the dbus. It works well my code (basically the same as the example from the documentation) is able to receive events so it's fine.

I use busctl to send an event like in the example:

If we open a python interpreter normally and enter the following:

I'm trying to use a systemd service to send a desktop notification using a .sh script with notify-send command. My script notif.sh is the following:

I am programming a BLE device and therefore need to get some information from the org.freedesktop.DBus.Properties interface, but can't get it to work from dbus python API. From the console this is no problem. For example, from dbus-send I can invoke following method call successfully (with correct mac address of course):

I've developped Java application to make some litle web scraping tasks with Selenium. It work fine in my local environment with Windows 10 and both chrome / FireFox last versions with their appropriate driver path configured.

The thing is I need my application to be in a container to deploy it and I've got issues. I've created a Dockerfile based on Alpine, and installed what need to be installed (helped by some posts found on the internet). With the FireFox driver it's working almost fine for the first operations but some do not work the same as they do in my configuration in local and some even crash the client... That's why I've tried with chromium but I've got some issues with a connection to the browser not even working.

I've spent hours already on this and start thinking maybe I'm missing something, am I supposed to do that way by dowloading browsers and driver in my Dockerfile ?

For now I sucpect the versions of FireFox or the geckodriver associated not behaving the same as the one I've got on my machine and I can see the browser when It's working inside the container only logs I've added.

Dockerfile (for FireFox browser try) :

I need to connect my android phone to the Linux PC via bluetooth. Phone needs to be able to create connection through the PC MAC and the UUID of the service (or UUID only) fully authomatically. And phone should be the connection initiator.

I've used this example: An Introduction to Bluetooth Programming and ran into problems, which are most likely occurs because my sample is deprecated. I was advised to use new DBus library, but I can not really understand how to connect program on my phone (which should be written in Java/Kotlin/Flutter) to the DBus architecture.

I've found this example: DBus tutorial using the low-level API and this line confuses me the most: With DBUS, before applications can communicate each other, they must be connected to the same BUS. Does this mean that if I use DBus on my server (Linux, C++), I have to use DBus on my phone also?

If so, what else can I use to acomplish my task?

I am stuck in this problem. I am running cypress tests. When I run locally, it runs smoothly. when I run in circleCI, it throws error after some execution.
Here is what i am getting:

We have a number of Python Databricks jobs that all use the same underlying Wheel package to install their dependencies. Installing this Wheel package even with a node that has been idling in a Pool still takes 90 seconds.

Some of these jobs are very long-running so we would like to use Jobs computer clusters for the lower cost in DBUs.

Some of these jobs are much shorter-running (<10 seconds) where the 90 second install time seems more significant. We have been considering using a hot cluster (All-Purpose Compute) for these shorter jobs. We would like to avoid the extra cost of the All-Purpose Compute if possible.

Reading the Databricks documentation suggests that the Idle instances in the Pool are reserved for us but not costing us DBUs. Is there a way for us to pre-install the required libraries on our Idle instances so that when a job comes through we are able to immediately start processing it?

Is there an alternate approach that can fulfill a similar use case?

I'm working on a raspberry pi project that involves running a node server in kiosk mode.

I'm using BROWSER=none to suppress the default opening of the localhost upon the server being run.

I'm thinking I should be able to use wait-on to force the bash script that runs the kiosk mode to wait until the server is fully up. Would I use something like this?