Difference between docker hub image and docker file on github

[Medel]

Is there a difference between the docker hub image and the docker file on github?
If I try the to run with the docker file there are errors.

1. Error with the key:
   && mkdir -p /usr/local/share/keyrings \ && wget -q -O /usr/local/share/keyrings/mopidy-archive-keyring.gpg https://apt.mopidy.com/mopidy.gpg \
   With me works:
   && mkdir -p /etc/apt/keyrings \ && wget -q -O /etc/apt/keyrings/mopidy-archive-keyring.gpg https://apt.mopidy.com/mopidy.gpg \
2. INSTALL SPOTIFY WORKAROUND does not work