tests: setup tests

.github/workflows/1-tests.yml

@@ -0,0 +1,22 @@
+name: Docker Run Action Tests
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  smoke-test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./
+        with:
+          image: docker:20.10.3
+          run: |
+            echo "::set-output name=image_name::`uname -r`"
+      - uses: actions/github-script@v3
+        with:
+          script: |
+            console.log(core.getOutput('image_name'))

.github/workflows/2-private-docker-test.yml

@@ -0,0 +1,9 @@
+name: Private Docker Run Test
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  run-private-docker: