building php image failed

[Fabberlaan]

cloned the repository
build the docker file
received this error:
executor failed running [/bin/sh -c mv /root/.symfony/bin/symfony /usr/local/bin/symfony]: exit code: 1

The solution was to delete line 15 of /php/Dockerfile

You said in your video that this line was for checking purpose only, what makes me think it is not vital. The build without line 15 looks fine to me