Student Builds Cloud-Native Laundry POS with Docker Compose and WhatsApp Bot

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Farrel Widjaja, a Computer Science student at BINUS University, developed Rels Laundry, a point-of-sale system aimed at small laundry businesses facing mixed-up orders, repeated customer status inquiries, and uncollected clothes. The application runs as an Express.js backend with a Tailwind CSS web interface, using a multi-stage Dockerfile that yields an image of about 184 MB. Docker Compose orchestrates the app with a PostgreSQL database, starting the backend only after the database passes a readiness check. Testing showed that order data survives container restarts thanks to named volumes, though removing volumes resets the database. The project's source code is publicly available on GitHub.

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Kisumu shops begin accepting bitcoin via QR codes that settle in M-Pesa

Two small shops in Kisumu started accepting bitcoin on 8 November 2026, letting customers pay by scanning a QR code with any Lightning wallet. The payments are converted so that shillings reach the merchant's M-Pesa account, meaning shopkeepers need no wallet, exchange account, or bitcoin knowledge. A local advocate is personally visiting shops to explain the system and printing a QR code for each merchant, at a cost of about $1 per code that he says he covers himself. He aims to add roughly one new merchant a week and is seeking sponsors and collaborators, while also preparing a Btrust application. The effort is intended to shift local perceptions of bitcoin, which many residents see as a scam or gamble.

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PicReady: a .NET library for resizing, cropping and compressing web uploads

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Audio Formats and Quality Settings Shape Voice AI Performance

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