diff --git a/api/Dockerfile b/api/Dockerfile
index ebe1efe..0233f8b 100644
--- a/api/Dockerfile
+++ b/api/Dockerfile
@@ -27,7 +27,15 @@ COPY requirements.txt ./
 RUN pip install --no-cache-dir --retries "${PIP_RETRIES}" --timeout "${PIP_DEFAULT_TIMEOUT}" -i "${PIP_INDEX_URL}" -r requirements.txt
 RUN python -c "import rasterio; print('rasterio ready:', rasterio.__version__)"
 
+# Static assets (tpbig.exe, etc.)
+COPY static/ /app/static/
+
+# Entrypoint: ensures tpbig.exe is available in runtime volume
+COPY docker-entrypoint.sh /docker-entrypoint.sh
+RUN chmod +x /docker-entrypoint.sh
+
 COPY app ./app
 
 EXPOSE 8000
+ENTRYPOINT ["/docker-entrypoint.sh"]
 CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--ws", "wsproto"]
diff --git a/api/docker-entrypoint.sh b/api/docker-entrypoint.sh
new file mode 100755
index 0000000..46c4954
--- /dev/null
+++ b/api/docker-entrypoint.sh
@@ -0,0 +1,41 @@
+#!/bin/bash
+set -e
+
+# ============================================================
+# fquiz API Docker Entrypoint
+# Ensures static assets (tpbig.exe) are available at runtime
+# locations, even when the /app/data volume is a fresh bind mount.
+# ============================================================
+
+STATIC_ROOT="/app/static/wine"
+DATA_ROOT="/app/data/wine"
+
+# --- tpbig.exe (Legacy ATP path: wine_allowed_root/ATP/tpbig.exe) ---
+if [ -f "${STATIC_ROOT}/ATP/tpbig.exe" ]; then
+    mkdir -p "${DATA_ROOT}/ATP"
+    if [ ! -f "${DATA_ROOT}/ATP/tpbig.exe" ] || ! cmp -s "${STATIC_ROOT}/ATP/tpbig.exe" "${DATA_ROOT}/ATP/tpbig.exe"; then
+        cp "${STATIC_ROOT}/ATP/tpbig.exe" "${DATA_ROOT}/ATP/tpbig.exe"
+        echo "entrypoint: initialized ${DATA_ROOT}/ATP/tpbig.exe"
+    fi
+fi
+
+# --- tpbig.exe (atp-storage path: used by atp_engine_executable) ---
+if [ -f "${STATIC_ROOT}/atp/tpbig.exe" ]; then
+    mkdir -p "${DATA_ROOT}/atp"
+    if [ ! -f "${DATA_ROOT}/atp/tpbig.exe" ] || ! cmp -s "${STATIC_ROOT}/atp/tpbig.exe" "${DATA_ROOT}/atp/tpbig.exe"; then
+        cp "${STATIC_ROOT}/atp/tpbig.exe" "${DATA_ROOT}/atp/tpbig.exe"
+        echo "entrypoint: initialized ${DATA_ROOT}/atp/tpbig.exe"
+    fi
+fi
+
+# --- tpbig.exe (atp-models storage: atp_storage_root) ---
+if [ -f "${STATIC_ROOT}/ATP/tpbig.exe" ]; then
+    mkdir -p "${DATA_ROOT}/atp-models"
+    if [ ! -f "${DATA_ROOT}/atp-models/tpbig.exe" ] || ! cmp -s "${STATIC_ROOT}/ATP/tpbig.exe" "${DATA_ROOT}/atp-models/tpbig.exe"; then
+        cp "${STATIC_ROOT}/ATP/tpbig.exe" "${DATA_ROOT}/atp-models/tpbig.exe"
+        echo "entrypoint: initialized ${DATA_ROOT}/atp-models/tpbig.exe"
+    fi
+fi
+
+# Execute the main container command
+exec "$@"
diff --git a/api/static/wine/ATP/tpbig.exe b/api/static/wine/ATP/tpbig.exe
new file mode 100755
index 0000000..f4ede81
Binary files /dev/null and b/api/static/wine/ATP/tpbig.exe differ
diff --git a/api/static/wine/atp/tpbig.exe b/api/static/wine/atp/tpbig.exe
new file mode 100755
index 0000000..f4ede81
Binary files /dev/null and b/api/static/wine/atp/tpbig.exe differ