The first phase-11 file op (inline rename) returns EROFS today because docker-compose mounts ~/Pictures read-only by default. Lightroom-style file operations (rename, move, discard-pile empty) all need to mutate the filesystem, so the right default is :rw. Flips both the backend and worker mounts to :rw with an inline comment explaining the trade-off, and adds a "Photo directory mounts and permissions" section to the README that: - States the default is now :rw - Explains exactly which endpoints fail under :ro (rename, empty discard pile, future move/copy) - Notes the implication: Mulita has full write access to whatever host directory ends up at /host/Pictures, same trust model as Lightroom's catalog folder Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Mulita - Self-Hosted Photo Management Application
A self-hosted, Docker-deployed photo management application inspired by Lightroom's workflow. Mulita provides a fast, keyboard-driven interface to browse, organize, tag, and manage your photo library.
Features
- Photo Organization: Browse photos in a timeline view with virtual scrolling for performance
- Thumbnail Generation: Automatic thumbnail generation for all photo formats including RAW
- Metadata Extraction: Full EXIF/XMP metadata extraction and search
- Keyboard Shortcuts: Lightroom-style keyboard navigation and actions
- File Support: JPEG, PNG, RAW formats (CR2, CR3, NEF, ARW, etc.), HEIC/HEIF, and videos
- Heaps: Temporary collections for organizing photos
- Tags & Ratings: Organize with tags, star ratings, and color labels
- Dark Mode: Photography-optimized dark interface
Tech Stack
Backend
- Python 3.12 with FastAPI
- SQLite with SQLAlchemy (async)
- Celery + Redis for background tasks
- pyvips for fast thumbnail generation
- ExifTool for metadata extraction
Frontend
- React 18 with TypeScript
- Vite for fast development
- TanStack Query for data fetching
- TanStack Virtual for virtualized scrolling
- Tailwind CSS for styling
- Zustand for state management
Quick Start
Prerequisites
- Docker and Docker Compose
- Photo directories to mount
Setup
- Clone the repository:
git clone <repository-url>
cd muleimage
- Configure your photo directories in
.env:
# Edit .env file
PHOTO_DIRS=/path/to/your/photos
- Start the application:
docker-compose up -d
- Access the application at
http://localhost:3000
Photo directory mounts and permissions
Mulita is a Lightroom-style manager — file operations (rename, move,
discard, empty discard pile) need to mutate the filesystem under your
photo mounts. The default docker-compose.yml mounts:
${PHOTO_DIRS}→/photos(read-write)~/Pictures→/host/Pictures(read-write by default so file operations work on your system Pictures folder out of the box)
If you want a strict read-only library — for example pointing at a
network share or your authoritative archive — change :rw to :ro
on the mount in docker-compose.yml. Mulita will keep working for
browsing, rating, color labels, picks, heaps, and the discard flag,
but the following endpoints will return an error from the OS
(EROFS / Read-only file system):
PATCH /photos/{id}with a newfilename(rename)DELETE /discard/empty(file unlinks)- Future move / copy endpoints
Heads up: with :rw, Mulita has full write access to whatever
host directory you mount under ~/Pictures. Treat the same way you
would Lightroom's catalog folder.
Architecture
The application consists of 5 Docker services:
- frontend: React SPA served by Nginx
- backend: FastAPI REST API
- worker: Celery workers for background tasks
- redis: Message broker for Celery
- db: SQLite database (file-based)
Keyboard Shortcuts
| Key | Action |
|---|---|
← → ↑ ↓ |
Navigate photos |
Space |
Quick preview |
Enter |
Open loupe view |
P |
Pick photo |
X |
Reject photo |
1-5 |
Set star rating |
Tab |
Toggle left sidebar |
I |
Toggle metadata panel |
G |
Grid view |
E |
Loupe view |
Delete |
Move to trash |
Development
Backend Development
cd backend
pip install -r requirements.txt
uvicorn app.main:app --reload
Frontend Development
cd frontend
npm install
npm run dev
Configuration
Edit mulita.yml to configure:
- Source photo directories
- Thumbnail sizes and quality
- Scanner settings
- Performance tuning
Performance
- Handles 100,000+ photos efficiently
- Virtual scrolling for smooth timeline navigation
- Thumbnail generation at 10+ photos/second
- SQLite FTS5 for fast full-text search
Future Features (Phase 2)
- AI-powered scene classification
- Face detection and clustering
- Smart albums
- Duplicate detection
- Export presets
- Multi-user support
License
MIT