https://rupal2k.github.io/rupalportfolio/tags/docker/DockerHugoBlox Kit (https://hugoblox.com)en-usWed, 01 Jan 2025 00:00:00 +0000https://rupal2k.github.io/rupalportfolio/media/icon_hu_da05098ef60dc2e7.pnghttps://rupal2k.github.io/rupalportfolio/tags/docker/https://rupal2k.github.io/rupalportfolio/projects/fintrak/Wed, 01 Jan 2025 00:00:00 +0000https://rupal2k.github.io/rupalportfolio/projects/fintrak/<p>Fintrak is a personal expense tracking engine with a ₹0/month operational cost. Four n8n automation pipelines running in Docker handle the full workflow: send a receipt photo to a Telegram bot → OCR.Space extracts the text → a 12-category rule engine categorizes it → the expense logs to Google Sheets with a Google Drive receipt backup. A 9 PM IST cron sends a daily summary back to Telegram.</p> <p><strong>Architecture:</strong> Telegram Bot (UI) · n8n on Docker (Engine) · OCR.Space API (Extraction) · Google Sheets (Database) · Google Drive (Storage)</p> <p><strong>Key design principles:</strong> Frictionless UI (the interface lives where you already chat) · Zero monthly cost (free-tier APIs only) · Sovereign data (nothing touches a third-party server)</p> <p><strong>Stack:</strong> n8n · Docker · Telegram Bot API · OCR.Space · Google Sheets API · Google Drive API · JavaScript</p>