Drone Server 的参考配置索引如下：
- DRONE_BITBUCKET_CLIENT_ID
- DRONE_BITBUCKET_CLIENT_SECRET
- DRONE_BITBUCKET_DEBUG
- DRONE_CLEANUP_DEADLINE_PENDING
- DRONE_CLEANUP_DEADLINE_RUNNING
- DRONE_CLEANUP_DISABLED
- DRONE_CLEANUP_INTERVAL
- DRONE_CONVERT_PLUGIN_ENDPOINT
- DRONE_CONVERT_PLUGIN_EXTENSION
- DRONE_CONVERT_PLUGIN_SECRET
- DRONE_CONVERT_PLUGIN_SKIP_VERIFY
- DRONE_COOKIE_SECRET
- DRONE_COOKIE_TIMEOUT
- DRONE_CRON_DISABLED
- DRONE_CRON_INTERVAL
- DRONE_DATABASE_DATASOURCE
- DRONE_DATABASE_DRIVER
- DRONE_DATABASE_MAX_CONNECTIONS
- DRONE_DATABASE_SECRET
- DRONE_GIT_ALWAYS_AUTH
- DRONE_GIT_PASSWORD
- DRONE_GIT_USERNAME
- DRONE_GITEA_CLIENT_ID
- DRONE_GITEA_CLIENT_SECRET
- DRONE_GITEA_SERVER
- DRONE_GITEA_SKIP_VERIFY
- DRONE_GITEE_REDIRECT_URL
- DRONE_GITEE_SCOPE
- DRONE_GITEE_SKIP_VERIFY
- DRONE_GITHUB_CLIENT_ID
- DRONE_GITHUB_CLIENT_SECRET
- DRONE_GITHUB_SCOPE
- DRONE_GITHUB_SERVER
- DRONE_GITHUB_SKIP_VERIFY
- DRONE_GITLAB_CLIENT_ID
- DRONE_GITLAB_CLIENT_SECRET
- DRONE_GITLAB_SERVER
- DRONE_GITLAB_SKIP_VERIFY
- DRONE_GOGS_SERVER
- DRONE_GOGS_SKIP_VERIFY
- DRONE_JSONNET_ENABLED
- DRONE_LICENSE
- DRONE_LOGS_COLOR
- DRONE_LOGS_DEBUG
- DRONE_LOGS_PRETTY
- DRONE_LOGS_TEXT
- DRONE_LOGS_TRACE
- DRONE_PROMETHEUS_ANONYMOUS_ACCESS
- DRONE_REGISTRATION_CLOSED
- DRONE_REPOSITORY_FILTER
- DRONE_RPC_SECRET
- DRONE_S3_BUCKET
- DRONE_S3_ENDPOINT
- DRONE_S3_PATH_STYLE
- DRONE_S3_PREFIX
- DRONE_SERVER_HOST
- DRONE_SERVER_PROTO
- DRONE_SERVER_PROXY_HOST
- DRONE_SERVER_PROXY_PROTO
- DRONE_STARLARK_ENABLED
- DRONE_STARLARK_STEP_LIMIT
- DRONE_STASH_CONSUMER_KEY
- DRONE_STASH_PRIVATE_KEY
- DRONE_STASH_SERVER
- DRONE_STASH_SKIP_VERIFY
- DRONE_STATUS_DISABLED
- DRONE_STATUS_NAME
- DRONE_TLS_AUTOCERT
- DRONE_TLS_CERT
- DRONE_TLS_KEY
- DRONE_USER_CREATE
- DRONE_USER_FILTER
- DRONE_VALIDATE_PLUGIN_ENDPOINT
- DRONE_VALIDATE_PLUGIN_SECRET
- DRONE_VALIDATE_PLUGIN_SKIP_VERIFY
- DRONE_WEBHOOK_ENDPOINT
- DRONE_WEBHOOK_EVENTS
- DRONE_WEBHOOK_SECRET
- DRONE_WEBHOOK_SKIP_VERIFY