mtg_python_deckbuilder/DOCKER.md

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# Docker Guide (concise)
Run the MTG Deckbuilder in Docker with persistent volumes and optional headless mode.
## Quick start
### PowerShell (recommended)
```powershell
docker compose build
docker compose run --rm mtg-deckbuilder
```
### From Docker Hub (PowerShell)
```powershell
docker run -it --rm `
-v "${PWD}/deck_files:/app/deck_files" `
-v "${PWD}/logs:/app/logs" `
-v "${PWD}/csv_files:/app/csv_files" `
mwisnowski/mtg-python-deckbuilder:latest
```
## Volumes
- `/app/deck_files``./deck_files`
- `/app/logs``./logs`
- `/app/csv_files``./csv_files`
- Optional: `/app/config``./config` (JSON configs for headless)
## Interactive vs headless
- Interactive: attach a TTY (compose run or `docker run -it`)
- Headless auto-run:
```powershell
docker compose run --rm -e DECK_MODE=headless mtg-deckbuilder
```
- Headless with JSON config:
```powershell
docker compose run --rm `
-e DECK_MODE=headless `
-e DECK_CONFIG=/app/config/deck.json `
mtg-deckbuilder
```
### Common env vars
- DECK_MODE=headless
- DECK_CONFIG=/app/config/deck.json
- DECK_COMMANDER, DECK_PRIMARY_CHOICE
- DECK_ADD_LANDS, DECK_FETCH_COUNT
## Manual build/run
```powershell
docker build -t mtg-deckbuilder .
docker run -it --rm `
-v "${PWD}/deck_files:/app/deck_files" `
-v "${PWD}/logs:/app/logs" `
-v "${PWD}/csv_files:/app/csv_files" `
mtg-deckbuilder
```
## Troubleshooting
- No prompts? Use `docker compose run --rm` (not `up`) or add `-it` to `docker run`
- Files not saving? Verify volume mounts and that folders exist
- Headless not picking config? Ensure `./config` is mounted to `/app/config` and `DECK_CONFIG` points to a JSON file
## Tips
- Use `docker compose run`, not `up`, for interactive mode
- Exported decks appear in `deck_files/`
- JSON run-config is exported only in interactive runs; headless skips it