use wget if curl in not installed

.github/workflows/reviewdog.yml

@@ -74,3 +74,14 @@ jobs:
           github_token: ${{ secrets.github_token }}
           reporter: github-check
           level: warning
+
+  actionlint:
+    name: runner / actionlint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: reviewdog/action-actionlint@v1
+        with:
+          github_token: ${{ secrets.github_token }}
+          reporter: github-check
+          level: warning

.github/workflows/test.yml

@@ -28,3 +28,13 @@ jobs:
         with:
           reviewdog_version: v0.10.0
       - run: test "$(reviewdog -version)" = '0.10.0'
+
+  container:
+    runs-on: ubuntu-latest
+    container:
+      image: alpine:latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: install reviewdog
+        uses: ./
+      - run: reviewdog -version

action.yml

@@ -1,28 +1,27 @@
-name: 'Setup reviewdog'
-description: '🐶 This action sets up reviewdog'
+name: "Setup reviewdog"
+description: "🐶 This action sets up reviewdog"
 inputs:
   reviewdog_version:
-    description: 'reviewdog version. [latest,nightly,vX.Y.Z]'
-    default: 'latest'
+    description: "reviewdog version. [latest,nightly,vX.Y.Z]"
+    default: "latest"
 runs:
-  using: 'composite'
+  using: "composite"
   steps:
-    - run: $GITHUB_ACTION_PATH/install.sh
-      shell: bash
+    - name: install reviewdog
+      run: |
+        set -eu
+        "$GITHUB_ACTION_PATH/install.sh"
+      shell: sh
       env:
         REVIEWDOG_VERSION: ${{ inputs.reviewdog_version }}
         REVIEWDOG_TEMPDIR: ${{ runner.temp }}
-    - run: |
-        if ! command -v reviewdog >/dev/null 2>&1; then
-          echo "reviewdog was not installed"
-          exit 1
-        fi
-        echo "::group::📖 reviewdog -h"
-        reviewdog -h 2>&1 || true
-        echo "::endgroup::"
-      shell: bash
+    - name: check reviewdog is successfully installed
+      run: |
+        set -eu
+        "$GITHUB_ACTION_PATH/check-installed.sh"
+      shell: sh
 
 # Ref: https://haya14busa.github.io/github-action-brandings/
 branding:
-  icon: 'terminal'
-  color: 'gray-dark'
+  icon: "terminal"
+  color: "gray-dark"

check-installed.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+if ! command -v reviewdog >/dev/null 2>&1; then
+    echo "reviewdog was not installed"
+    exit 1
+fi
+echo "::group::📖 reviewdog -h"
+reviewdog -h 2>&1 || true
+echo "::endgroup::"

install.sh

@@ -1,6 +1,6 @@
-#!/bin/bash
+#!/bin/sh
 
-set -euo pipefail
+set -eu
 
 VERSION="${REVIEWDOG_VERSION:-latest}"
 
@@ -14,7 +14,7 @@ if [ -z "${TEMP}" ]; then
 fi
 
 INSTALL_SCRIPT='https://raw.githubusercontent.com/reviewdog/reviewdog/master/install.sh'
-if [ "${VERSION}" == 'nightly' ] ; then
+if [ "${VERSION}" = 'nightly' ]; then
   INSTALL_SCRIPT='https://raw.githubusercontent.com/reviewdog/nightly/master/install.sh'
   VERSION='latest'
 fi