feat(docker): add robust healthcheck script (#5028)
* feat(docker): add robust healthcheck script
- Added `docker/healthcheck.cjs`: A standalone, dependency-free Node.js script for verifying server status.
- Updated `Dockerfile`: Added HEALTHCHECK instruction and script copy step.
- Features: Auto-detects port from env/config, handles IPv4/IPv6 fallback, auto-retries HTTPS on socket hangup, and sets custom User-Agent.
* feat(docker): new healthcheck with /api/health endpoint
- Added `GET /api/health` endpoint to `server.js` (unauthenticated) for lightweight status checks.
- Update `docker/healthcheck.cjs`: Rewrite
- Updated Error handle for `HEALTHCHECK`
* feat(docker): switch to heartbeat file healthcheck mechanism
- Replaced network-based check with a file-based heartbeat approach.
- Updated `src/command-line.js`: Added `heartbeatInterval` argument with explicit ENV override (`SILLYTAVERN_HEARTBEAT_INTERVAL`).
- Updated `src/server-main.js`: Added logic to write `heartbeat.json` to data directory at set intervals.
- Rewrote `docker/healthcheck.cjs`: Script now monitors the heartbeat file timestamp (zero dependencies, no config parsing required).
- Updated `Dockerfile`: Sets default heartbeat interval to 30s and ensures script availability.
- Updated `config.yaml`: Added `heartbeatInterval` defaulting to 0 (disabled) for non-Docker users.
* Fix variable names
* Convert to ESM, use serverDirectory variable
* Move file to /src
* fix: update heartbeat path to use global DATA_ROOT variable
* Pretty colors
* Move healthcheck to docker-compose.yml
* Comment fixed
* Even cleaner diff!
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Co-authored-by: Pavdig <101715456+Pavdig@users.noreply.github.com>
Cohee
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