Image build fails in version 1.4.12, works fine in 1.4.10

[neuromancer85]

BUG REPORT:

Description

Image build fails in version 1.4.12, works fine in 1.4.10:

> 
> Repo name "10.20.8.101:5000/f2a/ess-apiportal-service" must  contain only lowercase, numbers, '-', '_' or '.'.
>

How to reproduce

[Add steps on how to reproduce this issue]

What do you expect

[Describe what do you expect to happen]

What happened instead

Repo name "10.20.8.101:5000/f2a/ess-apiportal-service" must contain only lowercase, numbers, '-', '_' or '.'.

Software:

• docker version: 19.03.2
• Spotify's dockerfile-maven version: 1.4.12

Full backtrace

[INFO] --- dockerfile-maven-plugin:1.4.12:build (default) @ apiportal-service ---
[INFO] dockerfile: null
[INFO] contextDirectory: C:\Users\antonio.bonifacio\IdeaProjects\ess-apiportal-service
[INFO] Building Docker context C:\Users\antonio.bonifacio\IdeaProjects\ess-apiportal-service
[INFO] Path(dockerfile): null
[INFO] Path(contextDirectory): C:\Users\antonio.bonifacio\IdeaProjects\ess-apiportal-service
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  23.365 s
[INFO] Finished at: 2019-10-02T11:22:49+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.spotify:dockerfile-maven-plugin:1.4.12:build (default) on project apiportal-service: Repo name "10.20.8.101:5000/f2a/ess-apiportal-service" must
 contain only lowercase, numbers, '-', '_' or '.'. -> [Help 1]
[ERROR]

[deveth0]

This is a duplicate of issue #308

[neuromancer85]

Duplicate of issue #308