feat: add Dockerfile for HuggingFace Spaces deployment + fix path resolution for Docker

Dockerfile

@@ -0,0 +1,25 @@
+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install OS dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Python dependencies first (Docker cache layer)
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy only what the API needs at runtime
+# (raw CSVs are gitignored and NOT copied — only the processed outputs)
+COPY api/         ./api/
+COPY src/         ./src/
+COPY fairvalue_xgboost.json .
+COPY data/processed/app_features.csv ./data/processed/app_features.csv
+
+# Hugging Face Spaces requires port 7860
+EXPOSE 7860
+
+# Uvicorn with 2 workers for concurrent requests
+CMD ["uvicorn", "api.main:app", "--host", "0.0.0.0", "--port", "7860", "--workers", "2"]

api/main.py

@@ -77,13 +77,17 @@ async def scout_player(player: str, club: str = "", interested_club: str = ""):
 
 
 
-# ── Currency Config ───────────────────────────────────────────────────────────
+# ── Currency Config ────────────────────────────────────────────────────────────
 EUR_TO_GBP = 0.85  # Approximate — review quarterly
 
-# ── Data / Model Globals ──────────────────────────────────────────────────────
-DATA_PATH = "data/processed/app_features.csv"
-MODEL_PATH = "fairvalue_xgboost.json"
+# ── Path resolution: works locally AND inside the Docker container ─────────────
+# Using __file__ means paths are always relative to api/main.py, not cwd.
+import pathlib
+_ROOT      = pathlib.Path(__file__).parent.parent.resolve()
+DATA_PATH  = str(_ROOT / "data" / "processed" / "app_features.csv")
+MODEL_PATH = str(_ROOT / "fairvalue_xgboost.json")
 
+# ── Data / Model Globals ───────────────────────────────────────────────────────
 df_global = None
 model_global = None
 expected_cols_global = None