export default platform before provisioning

Author: LukasAud

.github/workflows/module_acceptance.yml

@@ -116,6 +116,7 @@ jobs:
           else
             DOCKER_RUN_OPTS=''
           fi
+          export DOCKER_DEFAULT_PLATFORM=linux/amd64
           bundle exec rake "litmus:provision[${{matrix.platforms.provider}},${{ matrix.platforms.image }},$DOCKER_RUN_OPTS]"
           # Redact password
           FILE='spec/fixtures/litmus_inventory.yaml'