Reusable aur builder workflow (#25)

* Create reusable-builder-aur.yml

.github/workflows/reusable-builder-aur.yml

@@ -0,0 +1,77 @@
+# Copyright 2020 Wayback Archiver. All rights reserved.
+# Use of this source code is governed by the MIT license
+# that can be found in the LICENSE file.
+
+name: AUR Package Builder
+
+on:
+  workflow_call:
+    inputs:
+      product:
+        type: string
+        required: true
+        description: 'Product or package name'
+      params:
+        type: string
+        required: true
+        description: 'Building package parameters.'
+      artifact-path:
+        type: string
+        required: true
+        description: 'Path to stores artifacts.'
+    secrets:
+      wayback-ipfs-apikey:
+        description: 'Managed IPFS credential for distribution binaries.'
+
+permissions:
+  contents: read
+
+jobs:
+  aur-builder:
+    name: AUR Package Builder
+    runs-on: ubuntu-latest
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@2e205a28d0e1da00c5f53b161f4067b052c61f34 # v1.5.0
+        with:
+          egress-policy: block
+          disable-telemetry: true
+          allowed-endpoints: >
+            github.com:443
+            api.github.com:443
+            auth.docker.io:443
+            registry-1.docker.io:443
+            production.cloudflare.docker.com:443
+            storage.googleapis.com:443
+            proxy.golang.org:443
+            sum.golang.org:443
+            geo.mirror.pkgbuild.com:443
+
+      - name: Check out code base
+        if: github.event_name == 'push' || github.event_name == 'workflow_dispatch'
+        uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8 # v3.1.0
+        with:
+          fetch-depth: 0
+          submodules: true
+          persist-credentials: false
+
+      - name: Check out code base
+        if: github.event_name == 'pull_request'
+        uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8 # v3.1.0
+        with:
+          fetch-depth: 0
+          submodules: true
+          persist-credentials: false
+          ref: ${{ github.event.pull_request.head.sha }}
+
+      - name: Build AUR package
+        env:
+          WAYBACK_IPFS_APIKEY: ${{ secrets.wayback-ipfs-apikey }}
+        run: bash -c '${{ inputs.params }}'
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@83fd05a356d7e2593de66fc9913b3002723633cb # v3.1.1
+        with:
+          name: ${{ inputs.product }}-aur
+          path: ${{ inputs.artifact-path }}
+          if-no-files-found: error