Adds generic kubectl command (#14)

* adds generic kubectl command

* update name

* adds readme docs

* update desc

* update desc

README.md

@@ -271,6 +271,29 @@ Copy a file to the blue/green fog-ingest toolbox pod.
 | `src` | `string` | source in action context |
 | `dst` | `string` | destination in toolbox pod |
 
+### kubectl-exec
+
+Run commands that have access to the specified rancher cluster
+
+```yaml
+    - name: Run kubectl diff to output diff
+      uses: mobilecoinofficial/[email protected]
+      with:
+        action: kubectl-exec
+        rancher_cluster: ${{ secrets.RANCHER_CLUSTER }}
+        rancher_url: ${{ secrets.RANCHER_URL }}
+        rancher_token: ${{ secrets.RANCHER_TOKEN }}
+        command: |
+          helm template . | k diff -f -
+```
+
+| with | type | description |
+| --- | --- | --- |
+| `command` | `string` | command to run on the toolbox pod |
+| `rancher_cluster` | `string` | Target cluster name |
+| `rancher_url` | `string` | Rancher Server URL |
+| `rancher_token` | `string` | Rancher API Token |
+
 ### toolbox-exec
 
 Run a command on the blue/green fog-ingest toolbox pod.

entrypoint.sh

@@ -528,7 +528,11 @@ then
             echo ""
             k exec -n "${INPUT_NAMESPACE}" "${toolbox}" -c toolbox -- /bin/bash -c "${INPUT_COMMAND}"
             ;;
-
+        kubectl-exec)
+	    # setup kubeconfig and execute supplied command
+            rancher_get_kubeconfig
+            exec "$@"
+	    ;;
         *)
             error_exit "Command ${INPUT_ACTION} not recognized"
             ;;