Add correct author to article

_data/authors.yml

@@ -13,7 +13,7 @@ mathias:
   url: http://mathias-goebel.github.io/
   url_sub: https://www.sub.uni-goettingen.de/kontakt/personen-a-z/personendetails/person/mathias-goebel/
 
-ingo:
+ipf:
   username: ipf
   name: Ingo Pfennigstorf
   gravatar: 569098f51aea6be14814483899a7a8c4

_posts/2018-01-11-using-docker-for-a-simple-cli-app.md

@@ -6,10 +6,10 @@ cover-credits: CC BY-SA 2.0 WikiCommons:plasticrevolver
 navigation: True
 title: Using Docker for a simple Symfony Console App
 date: 2017-01-10 00:00:01
-tags:
+tags: docker
 class: post-template
 subclass: 'post tag-deployments'
-author: ingo
+author: ipf
 ---
 
 ## Symfony console