Make hypercorn log to stdout in Docker

This may help with debugging issues, because we now actually see
incoming requests also on the hypercorn layer.

Fixes #97.

docker/entrypoint.sh

@@ -5,4 +5,4 @@ export SNIKKET_WEB_DOMAIN="$SNIKKET_DOMAIN"
 export SNIKKET_TWEAK_PORTAL_INTERNAL_HTTP_INTERFACE="${SNIKKET_TWEAK_PORTAL_INTERNAL_HTTP_INTERFACE-127.0.0.1}"
 export SNIKKET_TWEAK_PORTAL_INTERNAL_HTTP_PORT="${SNIKKET_TWEAK_PORTAL_INTERNAL_HTTP_PORT-5765}"
 
-exec hypercorn -b "${SNIKKET_TWEAK_PORTAL_INTERNAL_HTTP_INTERFACE}:${SNIKKET_TWEAK_PORTAL_INTERNAL_HTTP_PORT}" 'snikket_web:create_app()'
+exec hypercorn -b "${SNIKKET_TWEAK_PORTAL_INTERNAL_HTTP_INTERFACE}:${SNIKKET_TWEAK_PORTAL_INTERNAL_HTTP_PORT}" --access-logfile=- --log-file=- 'snikket_web:create_app()'