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Add .env.example templates and document configuration in README

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Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Dierk
2026-05-19 12:03:53 +02:00
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@@ -347,6 +347,46 @@ scores in percent.
---
## Configuration (.env files)
Each backend reads its credentials and paths from a `.env` file in its `backend/`
directory. These files are gitignored — copy the `.env.example` template and fill
in the values before running.
### pgvector-demo/backend/.env
```bash
cp pgvector-demo/backend/.env.example pgvector-demo/backend/.env
```
| Variable | Description | Example |
|---|---|---|
| `DB_HOST` | PostgreSQL host | `localhost` |
| `DB_PORT` | PostgreSQL host port | `5433` |
| `DB_NAME` | Database name | `vectors_demo` |
| `DB_USER` | Database user | `dl` |
| `DB_PASSWORD` | Database password | — |
| `PHOTOS_DIR` | Absolute path to the photos folder | `/home/user/photos` |
### oravector-demo/backend/.env
```bash
cp oravector-demo/backend/.env.example oravector-demo/backend/.env
```
| Variable | Description | Example |
|---|---|---|
| `ORA_HOST` | Oracle host | `localhost` |
| `ORA_PORT` | Oracle host port | `37611` |
| `ORA_SERVICE` | Oracle service name (PDB) | `FREEPDB1` |
| `ORA_USER` | User for Python-embedding backend | `vectors_user` |
| `ORA_PASSWORD` | Password for `ORA_USER` | — |
| `ORA_USER_INDB` | User for in-database embedding backend | `vector` |
| `ORA_PASSWORD_INDB` | Password for `ORA_USER_INDB` | — |
| `PHOTOS_DIR` | Absolute path to the photos folder | `/home/user/photos` |
---
## Setup from scratch
### 1. PostgreSQL