run-in-docker.sh script is broken

[mthebridge]

Description

The run-in-docker.sh script fails with a docker syntax error.

Swagger-codegen version

Latest master branch (at f9ae84d)

Steps to reproduce

On latest master branch:

$ sudo ./run-in-docker.sh mvn package
++ dirname ./run-in-docker.sh
+ cd .
+ maven_cache_repo=/root/.m2/repository
+ mkdir -p /root/.m2/repository
++ id -u
++ id -g
+ docker run --rm -it -w /gen -e GEN_DIR=/gen -e MAVEN_CONFIG=/var/maven/.m2 -u 0:0 ' '
docker: invalid reference format.
See 'docker run --help'.

Related issues/PRs

Regression caused by e2c58fa - see here

Suggest a fix/enhancement

Remove the extra whitespace in the script.

[crhistianramirez]

Should this be closed then? #8070

[mthebridge]

Yes, sorry!