Allow for empty credentials when not required

.github/actions/setup-build-environment/action.yml

@@ -5,10 +5,12 @@ description: 'Clones the required repositories, and properly sets Python and con
 
 inputs:
  conan_user:
- required: true
+ required: false
+ default: ''
  type: string
  conan_password:
- required: true
+ required: false
+ default: ''
  type: string
  private_data:
  required: false
@@ -46,11 +48,16 @@ runs:
 
  conan profile detect -f
  conan config install https://github.com/Ultimaker/conan-config.git -a "-b CURA-11622_conan_v2"
- conan remote login cura-conan2 ${{ inputs.conan_user }} -p ${{ inputs.conan_password }}
+
+ if [ "${{ inputs.conan_user }}" != "" ] && [ "${{ inputs.conan_password }}" != "" ]; then
+ conan remote login cura-conan2 ${{ inputs.conan_user }} -p ${{ inputs.conan_password }}
+ fi
 
  if [ "${{ inputs.private_data }}" == "true" ]; then
  conan remote enable cura-private-conan2
- conan remote login cura-private-conan2 ${{ inputs.conan_user }} -p ${{ inputs.conan_password }}
+ if [ "${{ inputs.conan_user }}" != "" ] && [ "${{ inputs.conan_password }}" != "" ]; then
+ conan remote login cura-private-conan2 ${{ inputs.conan_user }} -p ${{ inputs.conan_password }}
+ fi
  fi
 
  if [ "${{ inputs.install_system_dependencies }}" == "true" ]; then