see: https://hub.docker.com/r/minio/minio
You can find accessKey and secretKey in /data/.minio.sys/config/config.json.
[runners.cache]
Type = "s3"Shared = true
[runners.cache.s3]
ServerAddress = "host:9000"AccessKey = "AccessKey"SecretKey = "SecretKey"BucketName = "runner"Insecure = false