migrate: GitHub Actions beta v2 (HCL to YAML)

.github/main.workflow

@@ -1,9 +0,0 @@
-workflow "Main workflow" {
-  on = "push"
-  resolves = ["docker-build"]
-}
-
-action "docker-build" {
-  uses = "actions/docker/cli@master"
-  args = "build -t peaceiris/actions-hugo ."
-}

.github/workflows/push.yml

@@ -0,0 +1,17 @@
+name: Push workflow
+
+on: [push]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@master
+    - name: Docker build
+      uses: actions/docker/cli@master
+      with:
+        args: build -t peaceiris/actions-hugo .
+    - name: Check Hugo version
+      uses: actions/docker/cli@master
+      with:
+        args: run peaceiris/actions-hugo:latest version