Are you using short names to pull your images, i.e. 'requarks/wiki:latest' rather than the full path 'docker.io/requarks/wiki:latest'? (Note: official images in Docker Hub are under the 'library/' namespace, e.g. 'library/fedora')
Other networking issues, like the port publishing through the host bridging by default without needing to pass '--network' I believe are slated for the upcoming 3.3.2 patch release.