I dont use docker .. but grepping from the pkg db shows
This for 'daemon's
opt/metasploit/modules/exploits/linux/http/docker_daemon_tcp.rb
opt/metasploit/modules/exploits/linux/local/docker_daemon_privilege_escalation.rb
usr/share/doc/metasploit/modules/exploit/linux/http/docker_daemon_tcp.md
opt/vagrant/embedded/gems/gems/vagrant-2.2.7/plugins/provisioners/docker/cap/linux/docker_daemon_running.rb
opt/vagrant/embedded/gems/gems/vagrant-2.2.7/plugins/provisioners/docker/cap/windows/docker_daemon_running.rb
and this for 'json's
usr/lib/code/extensions/docker/syntaxes/docker.tmLanguage.json
usr/share/man/man5/docker-config-json.5.gz
usr/share/webapps/gitlab-gitaly/ruby/vendor/bundle/ruby/2.7.0/gems/github-linguist-7.5.1/grammars/source.dockerfile.json
usr/share/idea/plugins/textmate/lib/bundles/docker/syntaxes/docker.tmLanguage.json
usr/share/metricbeat/kibana/7/dashboard/Metricbeat-docker-overview.json
usr/share/pycharm/plugins/textmate/lib/bundles/docker/syntaxes/docker.tmLanguage.json
(ach. yeah. as usual, listen to @jonathon
)