sources:
  nginx-1.17.4.tar.gz: f33179726d2adbcc7805be14272ba4fd74aef9a0
  nginx-1.17.4.tar.gz.asc: 9a6015dc2bfafcc44b12ccd76fa89a13ff9f609a
  nginx-logo.png: a609ff4e27b6236233ea576739a6fb040da4d550
  nginx-rtmp-module-1.2.1.tar.gz: 7c6ae1afc117e3bf946b0d81f99d41fe538a7245