Adding initial ci.yml workflow

.github/workflows/ci.yml

@@ -0,0 +1,25 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  run:
+    name: Check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+      - name: Docker Lint
+        uses: docker://replicated/dockerfilelint
+        with:
+          args: Dockerfile
+      - name: Shell Lint
+        uses: actions/bin/shellcheck@master
+        with:
+          args: entrypoint.sh
+      - name: Test
+        uses: actions/bin/bats@master
+        with:
+          args: test/*.bats