Create ssh.yml, a workflow to access a cloud machine via ssh

.github/workflows/ssh.yml

@@ -0,0 +1,19 @@
+name: ssh
+on:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: macos-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Setup upterm session
+      uses: lhotari/action-upterm@v1
+      with:
+        ## Testing ssh access to macos cloud machine
+        ## limits ssh access and adds the ssh public key for the user which triggered the workflow
+        limit-access-to-actor: true
+        ## limits ssh access and adds the ssh public keys of the listed GitHub users
+        limit-access-to-users: oleg-alexandrov
+        ## If no one connects after 5 minutes, shut down server.
+        wait-timeout-minutes: 5