gitea-runner: set default_image in container config to use pantheon-ci for all jobs

servers/legion/apps/gitea-runner.yaml

@@ -26,7 +26,7 @@ spec:
                 --instance "$GITEA_INSTANCE_URL" \
                 --token "$GITEA_RUNNER_REGISTRATION_TOKEN" \
                 --name legion \
-                --labels "self-hosted:docker://registry.neuralplatform.ai/pantheon-ci:latest,linux:docker://registry.neuralplatform.ai/pantheon-ci:latest,x64:docker://registry.neuralplatform.ai/pantheon-ci:latest,legion:docker://registry.neuralplatform.ai/pantheon-ci:latest" \
+                --labels "self-hosted,linux,x64,legion" \
                 --no-interactive
               cat > /data/config.yaml << 'EOF'
               runner:
@@ -36,6 +36,8 @@ spec:
                 network: host
                 docker_host: "unix:///var/run/docker.sock"
                 force_pull: false
+                valid_volumes: []
+                default_image: "registry.neuralplatform.ai/pantheon-ci:latest"
               EOF
           envFrom:
             - secretRef: