Most of the code repos for Speechoid components live on Gerrit. The new recommendation is to instead use Gitlab for publishing to the Docker registry. The Gerrit repos should probably be marked as archived and point to the new ones or possibly removed. Affected repos (should maybe be broken out into individual tasks):
Sox proxy (which isn't on Gerrit) was added as a publishing repo on Gitlab (in T351223) and can be used as a reference. The group for Speechoid is repos/mediawiki/services/speechoid.
Also, we want to change the destination for the published images in the registry from wikimedia/mediawiki-services-wikispeech-ahotts to repos/mediawiki/services/speechoid/. The latter is default when publishing from Gitlab and uses Speechoid, which is more a accurate name. We probably want to remove or somehow deprecate the old images once this is done.