Dockerfile: Update to store environment variables in separate file
Dockerfile: Update to store environment variables in separate file

Instead of storing the environment variables in `.bashrc` store them
in `/home/wa/.wa_environment`. This allows for sourcing of this file
in non interactive environments.

setrofim/workload-automation,ARM-software/workload-automation,ARM-software/workload-automation,setrofim/workload-automation,setrofim/workload-automation,setrofim/workload-automation,ARM-software/workload-automation,ARM-software/workload-automation