Falla la compilación debido a incompatibilidad de versión de ruby

Gracias por intervenir @supermathie

Se está utilizando la 2.0.20260209-1300
desde una reconstrucción nueva con ./launcher rebuild web_only

Status: Downloaded newer image for discourse/base:2.0.20260209-1300
docker.io/discourse/base:2.0.20260209-1300
Ensuring launcher is up to date
Launcher is up-to-date
Stopping old container
+ /usr/bin/docker stop -t 600 web_only
web_only
2.0.20260209-1300: Pulling from discourse/base
Digest: sha256:50d2dae489a9c9916c3d50d880f7f1282fcbe179339b60a8947ab135c1f1f9bf
Status: Image is up to date for discourse/base:2.0.20260209-1300
docker.io/discourse/base:2.0.20260209-1300

end of build

docker: Error response from daemon: failed to set up container networking: driver failed programming external connectivity on endpoint web_only (9e391a36bdc1a80a6b993a466ffdba25337ce70f1fe74f2b5d8aaca75585322b): Bind for 0.0.0.0:80 failed: port is already allocated

failed to set up container networking.txt (74.3 KB)

Edición
Creo que el pecado original comenzó con la conversión a dos contenedores.