Docker: PluginSystem: Failed dynamic library load

[Varazir]

Hello

I'm running Domoticz in docker and I see this in the startup log

Code: Select all

Status: PluginSystem: Failed dynamic library load, install the latest libpython3.x library that is available for your platform.

About Domoticz
v2025.2 (build 17204)
System Information
Build Hash
71a61ff22
Compile Date
2026-02-20 11:33:19
dzVents Version
3.1.8
Python Version
None

I enter the command prompt for the docker and it said it's installed.

root@a78701199ed2:/opt/domoticz# apt install libpython3-stdlib
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
libpython3-stdlib is already the newest version (3.11.2-1+b1).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

[BarryT]

U need to install the lib and dev version of python, then it should work again.
Use customstart.sh (in the root directory of your domoticz container volume):

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#!/bin/bash

if [ -f /opt/domoticz/FIRSTRUN ]; 
then 
	true 
	echo "Already installed everything... Normal startup of Domoticz." 
else
touch /opt/domoticz/FIRSTRUN
echo 'creating FIRSTRUN file so script can check on next run'

apt update -y && apt upgrade -y
echo "cache en system updated & upgraded "

apt-get install -y libpython3.11 python3.11-dev
echo "installed python 3.11-dev & libpython3.11"

## rest of code if need to install more ##

[waltervl]

Installing extra Python libs to get the Python plugin system working on the Docker image should not be needed.
This seems to be an issue on the docker build.

Edit: Github issue created https://github.com/domoticz/domoticz-docker/issues/33

[BarryT]

Thats true, but that should at least fix the python error in latest version.

[Varazir]

Installing extra Python libs to get the Python plugin system working on the Docker image should not be needed.
This seems to be an issue on the docker build.

Edit: Github issue created https://github.com/domoticz/domoticz-docker/issues/33

Works now