Update Dockerfile
Update Dockerfile

Realized there as been a change within the setup of Dockerfile
Factorio is installed during the entrypoint.sh
MajorMJR/factorio-server-manager,MajorMJR/factorio-server-manager,sean-callahan/factorio-server-manager,MajorMJR/factorio-server-manager,MajorMJR/factorio-server-manager,sean-callahan/factorio-server-manager,sean-callahan/factorio-server-manager,sean-callahan/factorio-server-manager