To use this config provider in your Kafka Connect worker instances you should pass the following environment variables:
...
environment:
CONNECT_CONFIG_PROVIDERS: vault
CONNECT_CONFIG_PROVIDERS_VAULT_CLASS: com.provectus.kafka.connect.config.VaultConfigProvider
CONNECT_CONFIG_PROVIDERS_VAULT_PARAM_VAULT_AUTH_METHOD: token
CONNECT_CONFIG_PROVIDERS_VAULT_PARAM_URI: http://<your-vault-hostname>:8200
CONNECT_CONFIG_PROVIDERS_VAULT_PARAM_TOKEN: <your-vault-token>