diff --git a/action.yaml b/action.yaml
index 1037952..adc53c9 100644
--- a/action.yaml
+++ b/action.yaml
@@ -32,6 +32,7 @@ runs:
     - name: Workaround for RabbitMQ
       run: |
         # fix freaky leading "-e" in /etc/hosts
+        # see https://github.com/actions/runner-images/issues/12192
         sudo sed -i 's/^-e \+//g' /etc/hosts
         sudo apt-get purge -y esl-erlang || true
         sudo apt-get install -y erlang rabbitmq-server # if rabbitmq-server is not installed, tests must be stopped
@@ -60,7 +61,6 @@ runs:
         SERVICE_PASSWORD=secret
         SWIFT_HASH=1234123412341234
         LOGFILE=${{ inputs.log_dir }}/devstack.log
-        USE_PYTHON3=True
         INSTALL_TEMPEST=False
         GIT_BASE=https://github.com
         EOF
@@ -80,6 +80,11 @@ runs:
         EOF_CONF_OVERRIDES
       working-directory: ./devstack
       shell: bash
+    - name: Dump local.conf
+      run: |
+        cat local.conf
+      working-directory: ./devstack
+      shell: bash
     - name: Run devstack
       env:
         FORCE: ${{ inputs.force }}