Not working, hardware profile is not available

[gvnuland]

I have installed Domoticz as docker container with the official image of Domoticz on my Synology NAS.
I followed the next installation steps on my SHELL:
apt-get update
apt-get install python3-pip

cd plugins
git clone https://github.com/addiejanssen/domoticz-solaredge-modbustcp-plugin.git
cd domoticz-solaredge-modbustcp-plugin
pip3 install -r requirements.txt

pip3 uninstall pymodbus
pip3 install pymodbus==2.4.0

chmod +x plugin.py

But after restarting the docker container still the hardware profile "SolarEdge ModbusTCP" is not available in the drop down list. What is wrong with my installation steps?

This is the log file of the startup:
2021-04-11 17:40:47.839 Status: Domoticz V2020.2 (build 13133) (c)2012-2021 GizMoCuz
2021-04-11 17:40:47.839 Status: Build Hash: 399b22fa4, Date: 2021-03-30 14:57:44
2021-04-11 17:40:47.839 Status: Startup Path: /opt/domoticz/
2021-04-11 17:40:48.128 Active notification Subsystems: fcm, http (2/13)
2021-04-11 17:40:48.136 Starting shared server on: 0.0.0.0:6144
2021-04-11 17:40:48.125 Status: PluginSystem: Started, Python version '3.7.3'.
2021-04-11 17:40:48.129 Status: WebServer(HTTP) started on address: 0.0.0.0 with port 8080
2021-04-11 17:40:48.134 Status: WebServer(SSL) started on address: 0.0.0.0 with port 443
2021-04-11 17:40:48.136 Status: RxQueue: queue worker started...
2021-04-11 17:40:48.136 Status: TCPServer: shared server started...
2021-04-11 17:40:50.137 Status: NotificationSystem: thread started...
2021-04-11 17:40:50.137 Status: EventSystem: reset all events...
2021-04-11 17:40:50.137 Status: EventSystem: reset all device statuses...
2021-04-11 17:40:50.184 Status: Python EventSystem: Initalizing event module.
2021-04-11 17:40:50.184 Status: EventSystem: Queue thread started...
2021-04-11 17:40:50.184 Status: EventSystem: Started

Please guide me to the solution.