Add entrypoint to create /data dir before starting app

Dockerfile

@@ -12,6 +12,8 @@ COPY backend/requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
 COPY backend/ .
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
 
 ENV HOST=0.0.0.0
 ENV PORT=7860
@@ -22,4 +24,4 @@ ENV DATABASE_URL=sqlite:////data/nexusedu.db
 
 EXPOSE 7860
 
-CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]
+CMD ["/entrypoint.sh"]

entrypoint.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+set -e
+
+mkdir -p /data
+
+exec uvicorn main:app --host 0.0.0.0 --port 7860