anchor.diff:  |Allow external authentication
   |&#10004;
   |&#10004; +
  -via Spring security or via pluggable realms written in Groovy
  +via Spring security or via pluggable realms written in Groovy; +
  +OAuth +
  + - Google +
  + - Open ID +
  + - GitHub Enterprise
   |&#10004; +
   via Shiro
   |
  
positive.code: 
  |*Latest Version*
  |2.0.1
  |4.1.3
  |2.11.2
  |3.0
  |0.12.1
  
negative.code: |*?*
  
  a| - RPM for installing on YUM-enabled OSes.
    - Debian package
    - Docker images for OSS and Pro versions. Special image preconfigured to use as Docker Registry.
  
  |*?*
  