Add requirements.txt and update Dockerfile to install packages from it

Dockerfile

@@ -1,7 +1,11 @@
 FROM alpine:3.23
 
 RUN apk add --no-cache python3 py3-pip
-RUN pip3 install --break-system-packages flask flask-httpauth gunicorn requests jmespath
+
+# Copy requirements and install Python packages
+COPY requirements.txt /tmp/requirements.txt
+RUN pip3 install --break-system-packages -r /tmp/requirements.txt
+
 # Clean up apk cache
 RUN rm -rf /var/cache/apk/*