add github action

Signed-off-by: Sergi Alonso <sergi.alonsobdia@innovationalpha.es>

.github/workflows/main.yml

@@ -0,0 +1,12 @@
+name: docker bench security action
+on: [push]
+jobs:
+  actions:
+    runs-on: ubuntu-latest
+    name: A job to check docker bench security issues
+    steps:
+      # To use this repository's private action, you must check out the repository
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Docker bench security
+        uses: ./ # Uses an action in the root directory

action.yml

@@ -0,0 +1,6 @@
+# action.yml
+name: "docker bench security"
+description: "docker bench security"
+runs:
+  using: "docker"
+  image: "Dockerfile"