apt repositories' keyrings

Debian family of OSes deprecated the use of apt-key to manage repositories' keys in favor of using keyring files which contain a binary OpenPGP format of the key (also known as "GPG key public ring")

As nginx and passenger don't provide such key files, we created them following the official recomendations in their sites and install the resulting files.

Nginx

See https://nginx.org/en/linux_packages.html#Debian for details

$ curl -s https://nginx.org/keys/nginx_signing.key | \
    gpg --dearmor --output nginx-archive-keyring.gpg

Phusion-passenger

See https://www.phusionpassenger.com/docs/tutorials/deploy_to_production/installations/oss/ownserver/ruby/nginx/ for more details.

$ gpg --keyserver keyserver.ubuntu.com \
      --output - \
      --recv-keys 561F9B9CAC40B2F7 | \
  gpg --export --output phusionpassenger-archive-keyring.gpg

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apt repositories' keyrings

Nginx

Phusion-passenger

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