Update Dockerfile

Dockerfile

@@ -40,11 +40,18 @@ RUN chmod +x /app/api-server
 WORKDIR /app
 EXPOSE 7860
 
-RUN echo '#!/bin/sh' > /start.sh && \
-    echo 'wireproxy -config /wireproxy.conf &' >> /start.sh && \
-    echo 'sleep 3' >> /start.sh && \
-    echo 'echo "{\"server_host\": \"0.0.0.0\", \"server_port\": 7860, \"server_key\": \"'${SERVER_KEY}'\", \"upstream_server\": \"socks5://127.0.0.1:1080\"}" > config.json' >> /start.sh && \
-    echo './api-server -config config.json' >> /start.sh && \
-    chmod +x /start.sh
+RUN cat > /start.sh << 'EOF'
+#!/bin/sh
+
+wireproxy -c /wireproxy.conf &
+
+sleep 3
+
+echo "{\"server_host\":\"0.0.0.0\",\"server_port\":7860,\"server_key\":\"${SERVER_KEY}\",\"upstream_server\":\"socks5://127.0.0.1:1080\"}" > config.json
+
+exec ./api-server -config config.json
+EOF
+
+RUN chmod +x /start.sh
 
 CMD ["/start.sh"]