#!/bin/sh # Hands-On tutorial — React shell startup script. # # Two responsibilities: # 1. Write /tmp/config.json from env vars (the SPA fetches /config.json at boot). # 2. Inject a tiny inline " sed -i "s||$SEED_SCRIPT|" /app/index.html # 4. Increase nginx header buffers. The default 8K overflows on the OAuth # callback (state cookie + correlation cookie + the auth-server's # aspnet-core cookies pile up well past 8K), which returns # "400 Request Header Or Cookie Too Large" from this nginx. sed -i '/listen 8080;/a\ large_client_header_buffers 8 32k;\ client_header_buffer_size 16k;' /etc/nginx/conf.d/default.conf # 5. Serve. exec nginx -g 'daemon off;'