This is a slack puppeting bridge for matrix. It is based on mx-puppet-bridge.
Docker image can be found at https://hub.docker.com/r/sorunome/mx-puppet-slack
For docker you probably want the following changes in config.yaml
:
bindAddress: '0.0.0.0'
filename: '/data/database.db'
file: '/data/bridge.log'
Also check the config for other values, like your homeserver domain.
Get a legacy token from https://api.slack.com/custom-integrations/legacy-tokens and then chat with the bot user (@_slackpuppet_bot:domain.tld
unless you changed the config):
link <token>