Pulling opencast (opencast/allinone:4.0)...
ERROR: manifest for opencast/allinone:4.0 not found
By looking at the DockerHub the only 4.x tag is 4.4, while the only official 4.x version of Opencast is 4.0 and this also reflects in the docker-compose versioning.
example:
By looking at the DockerHub the only 4.x tag is 4.4, while the only official 4.x version of Opencast is 4.0 and this also reflects in the docker-compose versioning.