LMS doesn`t detect Sqeezelite on a RPI4

Hello guys ,

I have installed LMS and sqeezelite on a RPI4 in Docker containers / Portainer mode .

However ,my LMS installation doesn`t detect the Squeezelite player . I tried to install also Local Player from the LMS plugins , still no music is heard .

Any ideas ?

Is there an idiot proof guide in installing LMS/Squeezelite on Docker/Raspberry pi ?