Add CI on GitHub Actions

Author: orien

.github/workflows/tests.yml

@@ -0,0 +1,34 @@
+name: tests
+on: [push, pull_request]
+jobs:
+  plugin-tests:
+    name: Tests
+    runs-on: ubuntu-latest
+    container:
+      image: buildkite/plugin-tester:latest
+      volumes:
+        - "${{github.workspace}}:/plugin"
+    steps:
+      - uses: actions/checkout@v4
+      - name: tests
+        run: bats tests/
+  plugin-lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    container:
+      image: buildkite/plugin-linter:latest
+      volumes:
+        - "${{github.workspace}}:/plugin"
+    steps:
+      - uses: actions/checkout@v4
+      - name: lint
+        run: lint --id envato/aws-s3-sync
+  plugin-shellcheck:
+    name: Shellcheck
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Run ShellCheck
+        uses: ludeeus/action-shellcheck@1.1.0
+        with:
+          check_together: 'yes'

compose.yaml

@@ -0,0 +1,10 @@
+services:
+  tests:
+    image: "buildkite/plugin-tester"
+    volumes:
+      - ".:/plugin:ro"
+  lint:
+    image: "buildkite/plugin-linter"
+    command: ["--id", "envato/aws-s3-sync"]
+    volumes:
+      - ".:/plugin:ro"