Update Dockerfile

Dockerfile

@@ -6,7 +6,7 @@ RUN pip install cloudscraper Flask && \
 	apt-get install -y nodejs libnode108 && \
 	rm -rf /var/lib/apt/lists/*
 
-RUN <<EOF > /proxy.py
+COPY <<EOF > /proxy.py
 from flask import Flask, request, Response
 import cloudscraper
 scraper = cloudscraper.create_scraper(interpreter='nodejs')