sources:
  nginx-1.13.12.tar.gz: ad26921175b28acb8ae6c4eda59050df83279e6e
  nginx-1.13.12.tar.gz.asc: 42e2691fe79398aaa46f26c988dbf4a89171dc86
  nginx-logo.png: a609ff4e27b6236233ea576739a6fb040da4d550
  nginx-rtmp-module-1.2.1.tar.gz: 7c6ae1afc117e3bf946b0d81f99d41fe538a7245