use shebang

.build/prod/api.Dockerfile

@@ -1,8 +1,10 @@
 FROM python:3.9.20-slim-bookworm
 
 RUN pip install python-dotenv flask
+RUN apt-get update && apt-get install -y curl && apt-get clean && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /app
 COPY api.py tx.sh .
+RUN chmod +x tx.sh api.py
 
-CMD python /app/api.py
+CMD ./api.py

.build/prod/keepalive.Dockerfile

@@ -7,4 +7,4 @@ COPY keepalive.sh .
 
 RUN chmod +x keepalive.sh
 
-CMD /app/keepalive.sh
+CMD ./keepalive.sh