fix http links being rendered in template, i think

the form submit path is being rendered with an http:// URL instead of an
https:// URL which is bad and causes a warning to be shown by the
browser. for reasons i will not enumerate i think this will fix it

Dockerfile

@@ -10,4 +10,4 @@ COPY templates/ /app/templates
 COPY yaas.py /app/main.py
 
 USER appuser
-CMD ["uvicorn", "main:app", "--forwarded-allow-ips", "--host", "0.0.0.0", "--port", "8123"]
+CMD ["uvicorn", "main:app", "--proxy-headers", "--forwarded-allow-ips", "--host", "0.0.0.0", "--port", "8123"]