[BUG] mapping key "<<" already defined

[yucer]

With docker-compose version >=2.17.0 the docker-compose.yml section:

  scheduler:
    <<: *common
    <<: *depends-on

gives error:

  line 62: mapping key "<<" already defined at line 61
  line 73: mapping key "<<" already defined at line 72

according to this issue the section should be:

  scheduler:
    <<: [*common, *depends-on]

and also in webserver section:

  webserver:
    <<: [*common, *depends-on]