diff --git a/.gitea/workflows/probe.yml b/.gitea/workflows/probe.yml
new file mode 100644
index 0000000..61c5ac1
--- /dev/null
+++ b/.gitea/workflows/probe.yml
@@ -0,0 +1,23 @@
+name: probe
+
+on:
+  push:
+    branches: [main]
+
+jobs:
+  probe-shell:
+    name: probe shell + tools
+    runs-on: ubuntu-22.04
+    steps:
+      - name: echo hello
+        run: echo "hello from runner"
+
+      - name: which shell
+        run: |
+          echo "SHELL=$SHELL"
+          echo "PWD=$PWD"
+          uname -a
+          which bash sh python python3 pip pipx node curl wget docker || true
+
+      - name: env dump
+        run: env | sort