fix case sensitive KGE-Web-service

[marcvanandel]

On my Linux environment I get an error running this setup following the instructions ... because no Dockerfile can be found. This PR will fix this problem 😃

[ChristianF88]

I also ran into an error related to the KGE-Web-service.

docker-compose up
[+] Running 68/51
 ✔ redis 6 layers [⣿⣿⣿⣿⣿⣿]      0B/0B      Pulled                                                                                      21.8s
 ✔ elasticsearch 7 layers [⣿⣿⣿⣿⣿⣿⣿]      0B/0B      Pulled                                                                             16.8s
 ✔ fuseki 18 layers [⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿]      0B/0B      Pulled                                                                         6.8s
 ✔ rabbitmq 11 layers [⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿]      0B/0B      Pulled                                                                             13.6s
 ✔ mysql 11 layers [⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿]      0B/0B      Pulled                                                                                23.8s
 ✔ kibana 9 layers [⣿⣿⣿⣿⣿⣿⣿⣿⣿]      0B/0B      Pulled                                                                                  36.3s

[+] Building 0.0s (0/0)
unable to prepare context: path "/tmp/testing/COLID-Setup/kge-Web-service" not found

Your commit fixes the issue! Thanks!