feat: check github action syntax with actionlint

.github/workflows/lint-actionlint.yml

@@ -0,0 +1,21 @@
+name: lint
+on:
+  pull_request:
+    paths:
+      - ".github/workflows/*.yml"
+
+jobs:
+  actionlint:
+    name: actionlint
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2.3.4
+      - name: Install Actionlint
+        env:
+          ACTIONLINT_VERSION: 1.6.3
+        run: |
+          wget -q -O- "https://github.com/rhysd/actionlint/releases/download/v${ACTIONLINT_VERSION}/actionlint_${ACTIONLINT_VERSION}_linux_amd64.tar.gz" | tar -x -z -C . actionlint && \
+          mv actionlint /usr/local/bin
+      - name: Run Actionlint
+        run: |
+          actionlint -format '{{range $err := .}}::error file={{$err.Filepath}},line={{$err.Line}},col={{$err.Column}}::{{$err.Message}}{{end}}' -ignore 'SC2016:' .github/workflows/*.yml

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2.3.4
       - name: fetch hadolint version
-        run: echo "HADOLINT_VERSION=$(cat HADOLINT_VERSION)" >> ${GITHUB_ENV}
+        run: echo "HADOLINT_VERSION=$(cat HADOLINT_VERSION)" >> "${GITHUB_ENV}"
       - name: install hadolint
         run: |
           wget -q -O hadolint https://github.com/hadolint/hadolint/releases/download/v${{ env.HADOLINT_VERSION }}/hadolint-Linux-x86_64 && \
@@ -26,5 +26,3 @@ jobs:
           bash_unit -v
       - name: run suite
         run: bash_unit test/*.sh
-        env:
-          VERSION: ${{ steps.assign.outputs.version }}